Simulating air resistance (changing rotating velocity)

So I’ve been trying to conceptualize how to make this work, and it’s getting tricky.

I have a falling object, that gets kocked around by other falling objects and starts rotating indefinetly as if in a vacuum. I need to make a force that rotates the object back to its origional position, modifying but not overriding its previous rotation, similar to how air resistance would work.

Using set angular physics velocity and get rotation to do this seems tricky, and I was wondering if anyone had any ideas?

You can get current rotation and multiply it by, let say, 0.98 and then use this value to rotate. If you do this in Tick Event you will get a nice friction effect that will smoothly fade out your rotation.