1. God forbid!/Heaven forbid!/It´s unthinkable!: Hâşâ, siz kabalık etmezsiniz. It´s unthinkable that you´d do anything rude. 2. May God forgive me for saying it!/God forbid!
hâşâ huzurdan/ huzurunuzdan .... Saving your presence .../If you´ll excuse the expression ....