After falling being in Romania to an early goal United recovered to take all three points thanks to a brace from Van Persie.
The Dutchman insisted that Rooney deserved the credit for a superb assist for the winning goal.
Van Persie told ITV Sport: "Everything starts with a good pass so I have to thank him, not many players can give a pass like that.
"It was good build-up play, and when it came to him I knew that he can see that pass and actually give it exactly the way I want it, so credit to Wayne."
The victory over Cluj gave Van Persie has first chance to start alongside Rooney since making the move to Old Trafford in August.