Some Christians would consider the following phrases to be ā??taking the Lordā??s name in vainā?:

For the love of God!
MARY, MOTHER OF CHRIST!
JESUS FUCKING CHRIST
CHRIST ON A CRUTCH!
Jumpin Jiminy Christmas

Therefore, I think that maybe other, non-lord sayings, should suffice as replacements, such as:
Holy Fuckin' Moses!

Hope this helps!