Complex sentence: Mirza said that Atham didnt die because he repented in his heart but the opponents was very cruel and he said openly that he never repented and he never felt that any harm will come to him in the prescribed time.
Split into simpler sentences: Mirza said that Atham didnt die because he repented in his heart. The opponent (Atham) was very cruel and he said openly that he never repented and he never felt that any harm will come to him in the prescribed time.