Brother Rich had the right prayer.
From “The Roman Ritual Revised by Decree of the Second Vatican Ecumenical Coucil by the Authority of Pope Paul IV - The Order of Christian Funerals - Including Appendix 2: Cremation” Published by Catholic Book Publishing Co. New Jersey 1998
Page 121 from Chapter 5 Rite of Committal Option B of the Prayer over the people and is said by a lay minister.
May the love of God and the peace of the Lord Jesus
Christ
bless and console us
and gently wipe every tear from our eyes:
In the name of the Father,
and of the Sone, and of the Holy Spirit
Here is how it would go in it’s entirety complete with rubrics. (NOTE: the word minister is used because it may be a priest or deacon performing the rite of committal)
Prayer Over The People
223 The assisting minister says:
Bow your heads and pray for God’s blessing.
All pray silently. The minister with hands outstretched, prays over the people:
Merciful Lord,
you know the anguish of the sorrowful,
you are attentive to the prayers of the humble.
Hear your people
who cry out to you in their need,
and strengthen their hope in your lasting goodness.
We ask this through Christ our Lord
R. Amen
The minister then says the following:
Eternal rest grant unto him/her, O Lord.
R. And let perpetual light shine upon him/her.
May he/she rest in peace.
R. Amen
May his/her soul and the souls of all the faithful departed,
through the mercy of God, rest in peace.
R. Amen
**A **A minister who is a priest or deacon says:
May the peace of God,
which is beyond all understanding,
keep your hearts and minds
in the knowledge and love of God
and of his Son, our Lord Jesus Christ.
R. Amen
May almighty God bless you,
the Father, and the Son, + and the Holy Spirit.
R. Amen
B A lay minister invokes God’s blessing and signs himself or herself with the sign of the cross saying:
May the love of God and the peace of the Lord Jesus
Christ
bless and console us
and gently wipe every tear from our eyes:
In the name of the Father,
and of the Son, and of the Holy Spirit
R. Amen
The minister then concludes:
Go in the peace of Christ.
R. Thanks be to God
A song may conclude the rite. Where it is the custom, some sign or gesture of leave-taking may be made.