Copying a world space rotation locally?

Hi, i have 2 objects,

Object 1: Rotates in world space
Object 2: is a child of some other object


i want to rotate object 2's localrotation to match that of Object 1... is there any way to do this ?

 

Code (CSharp):

1.  
2. obj2.transform.localRotation = obj1.transform.rotation;
3.  

 

i didn't mean it like that... the rotations would be different

 

Code (CSharp):

1. obj2.transform.rotation = obj1.transform.rotation;