I really find these phrases are a bit of a peeve for me. Especially, "let go and let God". I call this churchanese.
They are a church version of babel. I dislike the babel of the world, and the world is babylon, the church should not be.
And "via con Dios" is "go with God."
Ok sorry to be a wet blanket. I know this is supposed to be fun.
So I will say that I do have a favorite. When the Pastor pronounces the forgiveness of sin in the name of Jesus. He sometimes will say. "go in the peace of God".