I believe the Sabae will win almost any fight except against different anemones, depending on which species. I'd try and give the Sabae at least 8-12 inches of room around him. If he starts moving though lots of things will not be happy if its' tentacles hit it.
That's what I figured. Unfortunately that is what he is doing, moving all around. He just made it to the top of a rock where the pavona is at. I'm have to put something so they don't touch.