Is the Egyptian saying "Ya Kharashi," considered polytheism (shirk), because it represents seeking help from other than God?

This word is not considered polytheism (shirk) or seeking help from other than Allah. Rather, it is said out of wonder or regret, and it is not intended as a supplication or a plea for help. It is more befitting for a Muslim to use the prescribed legal remembrances (dhikr) appropriate for such situations.