Lord, please grant me the senility to forget the people I never liked anyway, the good fortune to run into the ones I do, and the eyesight to tell the difference

that a bit like the old irish prayer, angel,

May God bless them that loves us,
And then, that don't, May God turn their hearts.
And if he can't turn their hearts,
May he turn their ankles,
So we will know them by their limping!

but the most common one i heard as a child was
May you be in heaven a half hour before the devil even knows you're dead!