Please read the translation of the munajaat of Imam Ali. It has some powerful sentences and one should weep after reading the verses.
O Allah. I am asking for your protection against the Day when nothing like wealth or children will be of use and only that person will benefit who will come with a pure heart.
And I am asking for your protection against the day when a wrong doer will be biting the back of his hands in regret and will be saying, "Oh I wish I had chosen the way chosen by the Prophet .
And I am asking you for your protection against the Day when sinners will be known by their faces, and will be taken by their hair and feet.
And I am asking you for your protection against the day when a father will not serve instead of his son nor will a son be punished instead of his father for anything, since Allah has promised thus and His promise is true.
And I am asking for your protection against the Day when apologising of the wrongdoers will not do them any good and because of that they will be cursed and will be put in the evil abode of Hell.
And I am asking for your protection against the Day when nobody will have control over anybody and the power will belong to Allah on that Day.
And I am asking for your protection against the Day when a person will run away from his brother, his mother, his father, his wife and children. That Day every person will have what he has earned for himself.
And I am asking for your protection against the Day when the sinner would wish that he could ransom the wrath of Allah descending on him at that time with his children, his wife, his brother and his relatives who gave him shelter and all those on earth, so that he be saved. No, never can he escape the wrath of Allah which will be in the form of burning fire roasting him.
My Lord, o my Lord, you are the Master and I am the slave, and who else can be merciful to the slave except his Master?
My Lord, o my Lord, you are the Owner and I am the one owned by you. Who else can be merciful to the owned except the Owner?
My Lord, o my Lord, you are Mighty and I am low. Who else can be merciful to the low except the Mighty?
My Lord, o my Lord, you are the Creator and I am the creature. Who else can be merciful to the creature except the Creator?
My Lord, o my Lord, you are the Glorious and I am miserable. Who else can be merciful to the miserablt except the Glorious?
My Lord, o my Lord, you are the Powerful and I am the weak. Who else can be merciful to the weak except the Powerful?
My Lord, o my Lord, you are the Wealthy and I am poor. Who else can be merciful to the poor except the Wealthy?
My Lord, o my Lord, you are the Bestower and I am the beggar. Who else can be merciful to the beggar except the Bestower?
My Lord, o my Lord, you are the Living and I am the dead. Who else can be merciful to the dead except the Living?
My Lord, o my Lord, you are the eternal and I am the transient. Who else can be merciful to the trasient except the Eternal?
My Lord, o my Lord, you are the Permanent and I am the short-lived. Who can be merciful to the short-lived except the Permanent?
My Lord, o my Lord, you are the Provider and I am the blessed. Who can be more merciful to the blessed except the Provider?
My Lord, o my Lord, you are the Generous and I am the miser. Who can be merciful to the miser except the Glorious?
My Lord, o my Lord, you are Free and I am the afflicted. Who can bee more merciful to the afflicted except the Free?
My Lord, o my Lord, you are the Great and I am the insignificant. Who else can be merciful to the insignificant except the Great?
My Lord, o my Lord, you are the Leading ad I am the staying. Who can be merciful to the staying except the Leading?
My Lord, o my Lord, you are the Merciful and I am the one shown mercy. Who can be more merciful to the one shown mercy except the Merciful?
My Lord, o my Lord, you are the Authority and I am the tried. Who else can be merciful to the tried except the Authority?
My Lord, o my Lord, you are the Guide and I am the confused. Who can be merciful to the confused except the Guide?
My Lord, o my Lord, you are the Forgiver and I am the sinner. Who can be merciful to the sinner except the Forgiver?
My Lord, o my Lord, you are the Victor and I am the defeated. Who else can be merciful to the defeated except the Victor?
My Lord, o my Lord, you are the Nourisher and I am the nourished. Who else can be merciful to the nourished except the Nourisher?
My Lord, o my Lord, you are the High-handed and I am the humble. Who can be merciful to the humble except the High-handed?
My Lord, o my Lord, have mercy on me by your Kindness, and be pleased with me by your Generosity and your Magnanimity and your Grace. O the Generous, and Beneficent, O the Almighty and the Benefactor, by Your Mercy, O the Most Kind.