This salutary practice consists of 10 Pater Noster and 100 Requiem Aeternam. Using a Rosary of 5 decades, you follow the beads around two times, allowing for 100 Requiem Aeternam to be said. After making the Sign of the Cross, say:

Holy souls, souls in need of purgation, pray to God for me; I will plead for you so that, as soon as possible, you may be granted the glory of heavenly Paradise. Amen.

Then say, Paternoster (Our Father), Avemaria (Hail Mary), Gloria Patri (Glory Be).

Say [on the beads of the Hail Mary] Requiem aeternam dona eis, Domine. Et lux perpetuated luceat eis. [10x].

At the end of each decade, say a Paternoster.

After 10 decades, recite the psalm De Profundis (for English), followed by another Requiem aeternam…

De profùndis clamàvi ad te, Dòmine;
Dòmine, exàudi vocem meam.
Fiant àures tuae intendèntes
in vocem deprecatiònis meae.

Si iniquitàtes observàveris,
Dòmine, Dòmine, quis sustinèbit?
Quia apud te propitiàtio est
et propter legem tuam sustìnui te, Dòmine.

Sustìnuit ànima mea in verbo ejus,
speràvit ànima mea in Dòmino.

A custòdia matutìna usque ad noctem,
speret Ìsraël in Dòmino,
quia apud Dòminum misericòrdia,
et copiòsa apud eum redèmptio.
Et ipse rèdimet Ìsraël
ex òmnibus iniquitàtibus ejus.

Requiem aeternam…

It is salutary to follow this Rosary with prayers to the Seven Effusions of the Most Precious Blood of Jesus:

1, O sweet Jesus! for the sweat of blood that you suffered in the Garden of Gethsemane, have mercy on the blessed souls of Purgatory, and especially on the soul(s) of N.N., and upon those souls who are most forgotten. Requiem aeternam…

2, O sweet Jesus for the sorrows you suffered in your most cruel scourging at the pillar, have mercy on the blessed souls of Purgatory, and especially on the soul(s) of N.N., and upon those souls who are most forgotten. Requiem aeternam…

3, O sweet Jesus! for the sorrows you suffered in your most agonizing crowning with thorns, have mercy on the blessed souls of Purgatory, and especially on the soul(s) of N.N., and upon those souls who have been most abandoned. Requiem aeternam…

4, O sweet Jesus! for the sorrows you experienced in carrying the Cross to Calvary, have mercy on the blessed souls of Purgatory, and especially on the soul(s) of N.N., and upon those souls who are most forgotten. Requiem aeternam…

5, O sweet Jesus! for the sorrows you suffered in your most cruel Crucifixion, have mercy on the blessed souls of Purgatory, and especially on the soul(s) of N.N., and upon those souls who have been most abandoned. Requiem aeternam…

6, O sweet Jesus! for the sorrows you had to suffer upon the Cross, have mercy on the blessed souls of Purgatory, and especially on the soul(s) of N.N., and upon those souls who have received the least succor. Requiem aeternam…

7, O sweet Jesus! for that immense sorrow that your most holy soul suffered when you expired upon the Cross, have mercy on the blessed souls of Purgatory, and especially on that of N.N., and upon the soul who has obtained the least suffrage. Requiem aeternam… Amen.