Book of Common Prayer (page 353)

The Bishop when present, or the Priest, stands and says

Almighty God have mercy on you, forgive you all your sins
through our Lord Jesus Christ, strengthen you in all
goodness, and by the power of the Holy Spirit keep you
in eternal life. Amen.

A deacon or lay person using the preceding form substitutes "us" for
"you" and "our" for "your."

When this Order is used at the beginning of the Liturgy, the service
continues with the Gloria in excelsis, the Kyrie eleison, or the
Trisagion.

When used separately, it concludes with suitable prayers, and the Grace
or a blessing.