إِنِّىٓ أَعُوذُ بِٱلرَّحْمَـٰنِ مِنكَ إِن كُنتَ تَقِيًّا
I surely take refuge from you with the Most Compassionate Lord, (leave me alone) if you are at all God-fearing.
This is what Mary a said when she first encountered Gabriel thinking he is a man, it is said that; upon hearing this he changes to angelic form so she is comfortable through rest of the conversation