"peace be upon you/him/her" or "peace be with you/him/her"
"May God's mercy be upon you/him/her" or "May God's mercy be with you/him/her"
In Galatians 6:16, Paul the apostle says [KJV translation] :
And as many as walk by this rule, peace be upon them and upon the Israel of God.
In John 20:21, Jesus says to the disciples :
Peace to you.
In I Peter 5:14, Peter the apostle says :
Peace be with you all
So it would seem, from three different individuals recorded in the bible, that there is a variety of ways of pronouncing peace.
[These are all accurate translations from the original Greek.]