Prevent rigidbody interaction

Hello,

How can I make a rigidbody NOT to interact with my PlayerController?

I have some spheres with rigidbody that push the player but to be able to collide with him. This is not meant to be!
How I can prevent that?

Thanks!

Set them to two separate physics layers (top right in the inspector when you click the object), and then go to edit → project settings → physics I believe and uncheck them where they cross in the matrix