At High Mass the Deacon (or at Low Mass the Priest) asks for a blessing:
Jube, domne (or Domine), benedicere.
Pray, sir (or Lord), a blessing.
The Priest pronounces the following prayer:
OMINUS sit in corde tuo (meo) et in labiis tuis (meis): ut digne et competenter annunties (annuntiem) Evangelium suum. (At High Mass only: In nomine Patris, et Filii, et Spiritus Sancti.) Amen.
AY the Lord be in your (my) heart and on your (my) lips that you (I) may worthily and fittingly proclaim His holy Gospel. (At High Mass only: In the name of the Father, and of the Son, and of the Holy Ghost.) Amen.