Chaplet of Divine Mercy
Prayed on ordinary rosary beads.
Begin: the Sign of the Cross, one Our Father, one Hail Mary, and the Apostles' Creed.
On each large bead:
Eternal Father, I offer you the Body and Blood, Soul and Divinity of your dearly beloved Son, our Lord Jesus Christ, in atonement for our sins and those of the whole world.
On each of the ten small beads:
For the sake of his sorrowful Passion, have mercy on us and on the whole world.
After five decades, three times:
Holy God, Holy Mighty One, Holy Immortal One, have mercy on us and on the whole world.
Read the official text at its source
Source. The site's own English rendering of the chaplet prayers from St. Faustina's Polish diary, which entered the public domain in 2008. The Trisagion is ancient and public domain.
On the wording. The English wording most people know is the Marian Fathers’ translation of the Diary, which is theirs and is not reproduced here. This is an independent rendering of the same Polish text, stated plainly so you know which you are reading. The official translation is linked.