I don’t make the Sign of the Cross or say “I bless you…” etc. in the way a priest would.
The Priest does not say “I bless you” either.
For the Rite of Distributing Holy Communion Outside Mass, the Priest’s blessing is:
“May almighty God bless you,
the Father, and the Son,
+ and the Holy Spirit.”
The rubric has “Instead of this formula a solemn blessing or prayer over the people may be used, as in the concluding rite of Mass in the Roman Missal.”
For a lay minister it has:
“40. If the minister is not a priest or a deacon, he invokes God’s blessing and, crossing himself, says:
May the Lord bless us,
protect us from all evil
and bring us to everlasting life.
or:
May the almighty and merciful God bless and protect us,
the Father, and the Son,
+ and the Holy Spirit.”
(This last cross symbol “
+ ” is in my English translation, published by E.J. Dwyer (Australia) in 1975, ISBN 0855744014. But there is no equivalent to it in the Latin edition published in 1974. Not that the presence of absence of it makes any difference, since the rubric is explicit about what is to happen.)
In the Roman Missal the Priest says:
“May almighty God bless you,
the Father, and the Son,
+ and the Holy Spirit.”
or with additional parts before it (a Solemn Blessing or with Prayers Over the People):
“And may the blessing of almighty God,
the Father, and the Son,
+ and the Holy Spirit,
come down on you and remain with you for ever.”
[Excerpts from the English translation of
Holy Communion and the Worship of the Eucharist Outside of Mass, © 1974, International Commission on English in the Liturgy Corporation. Excerpts from the English translation of
The Roman Missal, © 2010 International Commission on English in the Liturgy Corporation. All rights reserved.]