My wife and I pray this devotion as often as possible; it truly enriches our Lenten experience. Enjoy! 
The Chaplet of Mercy is recited using ordinary rosary beads of five decades.
Optional Opening Prayer
You expired, Jesus, but the source of life gushed forth for souls, and the ocean of mercy opened up for the whole world. O Fount of Life, unfathomable Divine Mercy, envelop the whole world and empty Yourself out upon us.
Begin the Chaplet with the Our Father, the Hail Mary and the Apostles' Creed.
The Our Father
Our Father, who art in heaven
hallowed be thy name;
thy kingdom come;
thy will be done on earth
as it is in heaven.
Give us this day our daily bread
and forgive us our trespasses
as we forgive those
who trespass against us;
and lead us not into temptation,
but deliver us from evil. Amen.
The Hail Mary
Hail Mary, full of grace.
The Lord is with thee.
Blessed art thou amongst women,
And blessed is the fruit of thy womb, Jesus.
Holy Mary, Mother of God,
Pray for us sinners,
Now and at the hour of our death. Amen.
The Apostles Creed
I believe in God, the Father almighty,
creator of heaven and earth,
and in Jesus Christ, His only Son, our Lord,
who was conceived by the Holy Spirit,
born of the Virgin Mary,
suffered under Pontius Pilate,
was crucified, died, and was buried.
He descended into hell.
On the third day he rose again from the dead.
He ascended into heaven
and is seated at the right hand of God, the Father almighty.
He will come again in glory to judge the living and the dead.
I believe in the Holy Spirit,
the Holy Catholic Church,
the communion of saints,
the forgiveness of sins,
the resurrection of the body,
and the life everlasting. Amen.
Then, on the large bead before each decade:
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 the ten small beads of each decade, say:
For the sake of His
sorrowful Passion,
have mercy on us
and on the whole world.
Conclude with (Say 3 Times):
Holy God,
Holy Mighty One,
Holy Immortal One,
have mercy on us
and on the whole world.
Optional Closing Prayer
Eternal God, in whom mercy is endless and the treasury of compassion -- inexhaustible, look kindly upon us and increase Your mercy in us, that in difficult moments we might not despair nor become despondent, but with great confidence submit ourselves to Your holy will, which is Love and Mercy itself.
The Chaplet of Mercy is recited using ordinary rosary beads of five decades.
Optional Opening Prayer
You expired, Jesus, but the source of life gushed forth for souls, and the ocean of mercy opened up for the whole world. O Fount of Life, unfathomable Divine Mercy, envelop the whole world and empty Yourself out upon us.
Begin the Chaplet with the Our Father, the Hail Mary and the Apostles' Creed.
The Our Father
Our Father, who art in heaven
hallowed be thy name;
thy kingdom come;
thy will be done on earth
as it is in heaven.
Give us this day our daily bread
and forgive us our trespasses
as we forgive those
who trespass against us;
and lead us not into temptation,
but deliver us from evil. Amen.
The Hail Mary
Hail Mary, full of grace.
The Lord is with thee.
Blessed art thou amongst women,
And blessed is the fruit of thy womb, Jesus.
Holy Mary, Mother of God,
Pray for us sinners,
Now and at the hour of our death. Amen.
The Apostles Creed
I believe in God, the Father almighty,
creator of heaven and earth,
and in Jesus Christ, His only Son, our Lord,
who was conceived by the Holy Spirit,
born of the Virgin Mary,
suffered under Pontius Pilate,
was crucified, died, and was buried.
He descended into hell.
On the third day he rose again from the dead.
He ascended into heaven
and is seated at the right hand of God, the Father almighty.
He will come again in glory to judge the living and the dead.
I believe in the Holy Spirit,
the Holy Catholic Church,
the communion of saints,
the forgiveness of sins,
the resurrection of the body,
and the life everlasting. Amen.
Then, on the large bead before each decade:
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 the ten small beads of each decade, say:
For the sake of His
sorrowful Passion,
have mercy on us
and on the whole world.
Conclude with (Say 3 Times):
Holy God,
Holy Mighty One,
Holy Immortal One,
have mercy on us
and on the whole world.
Optional Closing Prayer
Eternal God, in whom mercy is endless and the treasury of compassion -- inexhaustible, look kindly upon us and increase Your mercy in us, that in difficult moments we might not despair nor become despondent, but with great confidence submit ourselves to Your holy will, which is Love and Mercy itself.
