On the Crucifix recite the psalm "de Profundis":

Psalm 130
Out of the depths I have cried to Thee, O Lord; Lord, hear my voice.
Let thine ears be attentive to the voice of my supplication.
If Thou, O Lord, shalt observe iniquities; Lord, who shall endure it?
For with Thee there is merciful forgiveness:
and by reason of Thy law, I have waited for Thee, O Lord.
My soul hath relied on His word; my soul hath hoped in the Lord.
From the morning watch even until night, let Israel hope in the Lord.
Because with the Lord there is mercy, and with Him plentiful redemption.
And He shall redeem Israel from all her iniquities.

[In conclusion]
Eternal rest give unto them, O Lord,
and let perpetual light shine upon them.
Let us pray.
O God, the Creator and Redeemer of all the faithful,
grant to the souls of Thy servants departed the remission of all their sins, that through our pious supplication they may obtain that pardon which they have always desired; who lives and reigns for ever and ever.  Amen.

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On the large beads of the Rosary say the Lord's prayer (Our Father).

On the small beads of the Rosary recite the following Invocation:
O good Jesus, have mercy on the souls in purgatory or (mention name) and grant to them eternal rest.

The following prayers may be used with each decade as well as a particular intention for each decade.

First decade : I offer You, my Savior, this first decade for the souls of all of my relatives, through the Precious Blood which You shed for them in Your Agony in the Garden of Gethsemane . O good Jesus, have mercy on them!

Say the Our Father. Repeat the Invocation ten times.

Second decade : I offer You, my Savior, this second decade for the souls of all those who have shown me kindness, through the Precious Blood which You shed for them in Your Scourging, O good Jesus, have mercy on them!

Say the Our Father. Repeat the Invocation ten times.

Third decade : I offer You, my Savior, this third decade for the souls of those whom I have at any time offended, through the Precious Blood which You shed for them in carrying Your Cross to Calvary. O good Jesus, have mercy on them!

Say the Our Father. Repeat the Invocation ten times.

Fourth decade : I offer You, my Savior, this fourth decade for the souls of my friends and companions, through the Precious Blood which You poured forth upon the Cross, and through the sorrows which Mary, our tender Mother, endured at the foot of the Cross. O good Jesus, have mercy on them!

Say the Our Father. Repeat the Invocation ten times.

Fifth decade: I offer You, my Savior, this fifth decade for the soul of my father and/or Mother and/or relative. I offer You, for this soul so dear to me, the Precious Blood and the sacred water from Your Heart, pierced by the lance. O good Jesus, open to this soul the gate of heaven, and grant me the grace to be reunited with it forever in the bosom of Your goodness.

Say the Our Father. Repeat the Invocation ten times.

O good Jesus, have mercy on the souls in purgatory or the soul or souls (mention name) and grant to them eternal rest.