As with skills, the rituals of each order are only intended to be representational. You should feel free to develop new rites as you see fit, using existing rites as a guideline for what is possible at any given level. Keeping that in mind, I have gone and collected all the rituals from all the orders that are listed in all the books. This will give you an even greater reference for creating your own theurgic rituals! :-)

In the cases where it isn't necessarily obvious what sect uses a given set of rituals (which is most of them not in the main rule book...), I've listed the users of those rituals as well.

Note also that I include in the list those traits and skills required for each skill. It is useful when creating your theurgist to know in advance what traits and skills will be most useful to your character!

Reference Codes:
CG = Children of the Gods
LE = Legions of the Empire
LP = Lords and Priests
PC = Player's Companion
PR = Priests of the Celestial Sun
SC = Star Crusade

Church Rituals
    L1: The Prophet's Holy Blessing (Faith + Focus)
    L2: The Devotional Liturgy (Extrovert + Oratory)
    L3: The Laying On of Hands (Calm + Remedy)
    L4: The Prophet's Censure (Passion + Focus)
    L5: Oath to the Saints (Faith + Oratory)
	The Pulpit's Gift (Passion + Oratory)
    L6: The Tongues of Babel (Wits + Empathy)
    L7: The Righteous Assignation of Penance (Faith + Empathy)
    L8: Sanctification (Faith + Focus)
	Shield of Faith (Extrovert + Focus)
    L9: Providential Deliverance (Faith + Focus)


Banjak Rituals (Ukar, CG)
    Use Orthodox Rituals, plus:
    L2: Anikrunta's Blindness (Calm + Focus)
    L3: Kadan's Gift (Introvert + Observe)
    L6: Suffer the Ialtach (Extrovert + Empathy)
    L7: Sora's Blood (Calm + Physick)


Brother Battle Rituals
    L1: Soul's Vessel (Passion + Stoic Body)
    L2: Battle Sense (Perception + Fight or Melee or Shoot) PR
	Guiding Hand of Zakhayelos (Extrovert + Observe) LE
	Rightfully Guided Hand (Faith + Fight or Melee or Shoot)
    L3: Armor of the Pancreator (Faith + Dodge)
	Haze (Passion + Impress) LE
	Zakhayelos's Eyes (Perception + Empathy) PR
    L4: Righteous Fervor (Passion + Vigor)
    L5: Liturgy of the Wrathful Host (Passion + Charm)
    L6: Flood (Extrovert + Alchemy) LE
	Smiting Hand (Faith + Vigor)
    L7: Fearsome Majesty (Passion + Impress)
	Heaven's Axe (Faith + Fight or Melee) LP
    L8: Oath of the Shieldmates (Extrovert + Empathy)
    L9: Salutation to Zakhayelos (Passion + Impress)


Children of Zuran Rituals (Children of Zuran, PR)
    L2: Sweeping Samdei (Faith + Focus)
    L3: Golden Tongue of Zuran (Passion + Impress)
    L6: Saint Coyote's Eyes (Faith + Focus)


Chorali Rituals (Chorali, PC)
    L1: Ave Igna (Passion + Impress)
    L2: Blessed Disciple (Extrovert + Charm)
    L3: Bless the Faithful (Faith + Focus)
    L4: Fear of the Prophet (Extrovert + Impress)
    L5: The Chorus of Many Flames (Passion + Vigor)
	Song of Peace (Calm + Charm)
    L6: Shepherd's Lament (Calm + Focus)
	The Uplifting Word (Passion + Vigor)
    L7: Horn of Joshua (Strength + Vigor)
    L8: The Lord's Champion (Faith + Oratory)
    L9: Grace of the Empyrean (Faith + Performance)


Compassionate Gjarti Rituals (Gjarti, PC)
    Use Sanctuary Aeon Rituals


Contemplative Gjarti Rituals (Gjarti, PC)
    L1: Subtle Memory (Introvert + Focus)
    L2: Foreboding (Introvert + Observe)
    L3: Share Dream (Extrovert + Charm)
    L4: Dream Sign (Wits + Inquiry)
    L5: Mentor (Extrovert + Charm)
    L6: Dream Skill (Wits + Focus)
    L7: Waking Dream (Wits + Focus)
    L8: Times Gone By (Introvert + Observe)
    L9: Portents (Faith + Observe)


Death Gaze Rituals (Etyri, PC)
    L1: Horuspication (Perception + Inquiry)
    L2: Death Scent (Faith + Observe)
    L3: End Strike (Perception + combat skill)
    L4: Hunter Sense: Perception + Empathy)
    L5: Final Sight (Perception + Focus)
    L6: Final Song (Perception + Focus)
    L7: Dead Sight (Introvert + Focus)
    L8: Funerary Communion (Faith + Impress)
    L9: Songs of Distant Heights (Faith + Charm)


Drenjar Rituals (Vuldrok, SC)
    Use Gjarti Rituals, plus:
    L3: Strength of the Ettins (Passion + Vigor)
    L6: Hero Shield (Wits or Faith + Vigor)
    L8: Kurmda's Hammer (Passion + Impress)


El-Diin Rituals (Kurgan, SC)
    L1: Bal-Buhlul: Work Song (Passion + Impress or Performance)
    L2: Qitub-i-Hafzah: Writing the Pages of Memory (Wits + Observe)
    L3: Nafs-i-Shemshir: Soul of the Blades (Extrovert + Focus)
    L4: Jeldun Ihzim: Satai's Lesser Pleasure Trick (Passion + Physick)
    L5: Jeldun Hazam: Satai's Greater Pleasure Trick (Calm + Vigor)
    L6: Raqs al_Waghe: Dance of Faces (Extrovert + Vigor or Disguise)
    L7: Mus'hab-i-Aql: Clouding the Mind (Wits + Sneak)
    L8: Shinjuqa-Dhu: The Invisible Blade (Faith + Melee)
    L9: Amr al-Djinn: Command of the Spirits (Faith + Impress)


Eskatonic Order Rituals
    L1: Celestial Alignment (Perception + Observe)
    L2: Cypher (Introvert + Observe) PR
	Divine Revelation (Wits + Focus)
    L3: Rending the Veil of Unreason (Perception + Focus)
    L4: Second Sight (Perception + Focus)
    L5: Dreams of Eternity (Faith + Empathy)
	Osseous Transformation (Wits + Alchemy)
    L6: All-Seeing Eye (Perception + Observe)
	Burning Fist (Faith + Vigor) PR
    L7: Refinement of Essence (Wits + Alchemy)
    L8: Investiture (Calm + Focus)
    L9: Knowledge and Conversation of Thoumiyelos (Passion + Impress)


Folk Gjarti Rituals (Gjarti, PC)
    L1: Purification (Faith + Focus)
    L2: Gjarti's Blessing (Faith + Focus)
    L3: Gjarti's Kiss (Calm + Remedy)
    L4: Weather Way (Perception + Focus)
	Voice of the Animal Powers (Faith + Empathy)
	Voice of the Plant Powers (Calm + Empathy)
    L5: Sacred Space (Extrovert + Focus)
    L6: Call Creature (Passion + Charm or Empathy)
    L7: Command Creature (Extrovert + Impress)
	Storm Lord (Passion + Impress)
    L8: Strength of the Animal Powers (Passion + Vigor)
    L9: Summon the Lord of the Quarters (Extrovert + Charm)


God Rites (Vuldrok, SC)
    Only castable by priests of the named God
    L6: Kurmda's Rage (Faith + Vigor)
    L9: Wakinyan's Bolts (Faith + Focus)
	Wordun's Shirt (Faith + Vigor)


Hesychasts Rituals
    L2: Calm of the Desert Fathers (Introvert + Stoic Mind) PR
    L8: Summoning the Empyrean Angel (Faith + Focus) PR


Incarnate Rituals (Incarnates, PR)
    L1: Words of the Prophet (Faith + Focus)
    L2: Clear Path (Wits + Focus)
    L7: Sword of Righteousness (Faith + Vigor)


Lakol Rituals (Vuldrok, SC)
    Use Gjarti Rituals, plus:
    L3: Shield of the Ancestors (Faith + Dodge)
    L4: See the Invisible World (Perception + Focus)
    L8: Soul Recovery (Wits + Impress or Knavery)


Maghtaw Rituals (Vuldrok, SC)
    Use Gjarti Rituals, plus:
    L3: Hands of Gottun (Tech + Vigor)
    L4: Spirit of the Machine (Wits + Focus)
    L7: Vizlik's Song (Calm + Focus)


Manifest Light Rituals (Manifest Light Legion, LE)
    L1: Sense Symbiot (Faith + Observe)
    L2: Consecrated Body (Faith + Focus)
    L3: Fiery Doom (Dexterity + Shoot)
    L4: Divine Warning (Perception + Observe)
	Reveal Thoughts (Extrovert + Observe)
    L5: Cloistered Mind (Wits + Focus or Stoic Mind)
    L6: Command the Mind (Extrovert + Charm or Impress)
	Prevent Metamorphosis (Faith + Impress)
    L7: Disinfect (Faith + Stoic Body)
    L8: Disemble Shaping (Faith + Physick)
	Smite the Chain (Faith + Stoic Body)
    L9: Entreaty to Zala-Kyal (Passion + Charm)


Manja Rituals (Manja, PC)
    L1: Birthright (Wits + Search)
    L2: Advistor (Extrovert + Charm)
    L3: Schemes (Perception + Focus)
    L4: Sight From Beyond (Perception + Focus)
    L5: Protect Fief (Wits + Impress)
    L6: Foil Rival (Extrovert + Impress)
    L7: Thwart Assassin (Ego + Stoic Mind)
    L8: Command Kin (Extrovert + Leadership)
    L9: Summon Lord of Lords (Ego + Etiquette)


Orthodox Rituals
    L1: Chasten (Extrovert + Debate) PC
	Consecration (Faith + Focus)
    L2: Blessed Confession (Extrovert + Empath) LP
	Light (Passion + Focus)
    L3: Armor of the Pancreator (Faith + Dodge)
    L4: Calm the Flock (Extrovert + Oratory) PC
	Faithful Heart (Introvert + Stoic Mind)
	Tightening the Leash (Faith + Stoic Mind) PC
    L5: Dispersal of Darkness (Passion + Impress)
	Protect the Flock (Faith + Leadership) PC
    L6: Consecration of Land (Faith + Focus)
	Redeem the Flock (Faith + Leadership) PC
	Ritualis Staticus (Faith + Focus) PR
    L7: Blessing the Crops (Extrovert + Survival)
    L8: Exorcism (Faith + Impress)
    L9: Sealing the Temple (Calm + Impress)


Rekgold Rituals (Vuldrok, SC)
    Use Gjarti Rituals, plus:
    L4: Svarbad's Eye (Perception + Inquiry)
    L5: Barter Tongue (Wits + Charm)


Sanctuary Aeon Rituals
    L1: Cleansing (Faith + Focus)
    L2: Hearth (Passion + Focus)
    L3: Calming (Calm + Charm)
    L4: Knowing Heart (Perception + Empathy)
	Read Ghost Ting (Perception + Empath) PR
    L5: Fruitful Multiplication (Faith + Vigor or Sleight of Hand)
	Health of the Congregation (Calm + Focus) LP
	Restoration (Faith + Stoic Mind)
    L6: Manna from Heaven (Faith + Focus)
    L7: Healing Hands of Saint Amalthea (Calm + Physick)
    L8: Sanctuary (Faith + Charm)
    L9: Invitation to Hamomeyelos (Passion + Impress)


Sas Kanasu (Hironem, PC)
    Use Church, Orthodox and Sanctuary Aeon rituals
    Hironem Warrior Caste should use Brother Battle rituals


Skey Rituals (Vulrok, SC)
    Use Gjarti Rituals, plus:
    L2: Flesh of Zukinayan (Faith + Fosus)
    L6: Darts of the Pa'Unkta (Passion + Shoot)
    L8: Clan Mind (Extrovert + Empathy)


Temple Avesti Rituals
    L1: Knowing the False Heart (Perception + Empathy)
    L2: Scent of Evil (Perception + Empathy)
    L3: Sting of Conscience (Extrovert + Impress)
    L4: Blissful Ignorance (Faith + Impress) LP
	Torchbearing (Passion + Focus)
    L5: Fault of the Soulless (Passion + Impress or relevant Tech Redemption)
    L6: Fearsome Majesty (Passion + Impress)
	Padre Pontius Cciardi's Touch of Fire (Extrovert+Remedy or Physick) PR
    L7: Inquisitory Commandment (Passion + Inquiry)
	Padre Pontius Cciardi's Body of Fire (Faith+Vigor or Stoic Body) PR
    L8: Tortures of the Damned (Passion + Impress)
    L9: Petition to Jachemuyelos (Passion + Impress)


Voavenlohjun Rituals (Obun, CG)
    L1: Clear Mind (Introvert + Stoic Mind)
    L2: The Pattern Speaks (Wits + Focus)
    L3: Calming (Calm + Focus)
    L4: Qhaatai-Sight (Wits + Observe)
    L5: Thoroklati (Intorvert + Charm)
    L6: Dream Speech (Extrovert + Empathy)
    L7: Ishtel's Boon (Calm + Physick)
    L8: Beast Kelanti (Introvert + Vigor)
    L9: Petition to the Principles (Faith + Impress)


Zetol Rituals (Vuldrok, SC)
    Use Gjarti, plus:
    L6: Speak to the Dead (Faith + Focus)
    L9: Invisible Highway (Wits + Focus)



Hubris
    L1: Avert Beast
	Dim Lights (Ukar, CG)
    L2: Guilty Soul
    L3: Blemishes
	Blemished Baa'mon (Ukar, CG)
    L4: Flagellation
    L5: Dolorous Stroke
    L6: Faithless
    L7: Waste Land
    L8: Plague
    L9: Dead World