How to say oh my God in Russian language, study the correct pronunciation and look for the words analysis.
бо́же мой Го́споди. о бо́же means oh my God in Russian language
Translating each word from Russian to English the meaning is:
бо́же мой Го́споди. о бо́же
God mine Good Lord Oh God
бо́же мой, Го́споди, о бо́же God (vocative) Good Lord (vocative) бог Госпо́дь m.anim. God the Lord