anything to do with

phrase

1

: involvement with (a person) in any way

—used in negative statements

She thinks he's a liar and she refuses to have anything to do with him.

After the way he's treated me, I want nothing (further) to do with him.

2

: involvement in (something) or responsibility in some way for (something)

—used in negative statements

He claims that he didn't have anything to do with the accident.

She claims that she had nothing to do with the robbery.