The above is the passive equivalent of XはYのNをVます. N is a part of Y's body or Y's belongings. It is not N, but Y(i.e., the person who owns N) that is presented as the subject of the sentence. In many cases, Y suffers from the damage caused by X.
My younger brother was hit in the face by my older brother.
My older brother hit my younger brother in the face.
My mother had her wallet stolen by a thief.