minha nossa senhora

Etymology
lit. 'my our lady!' This usually refers to.

Interjection

 * 1) oh my God!; good Lord!; Jesus! said in shock, awe or dismay

Usage notes
This phrase is sometimes used with a name of a female saint:
 * "minha nossa senhora de Fátima!"
 * "minha nossa senhora de Lourdes!"

Usually, no name is added, just: "minha nossa senhora!"