How many could face the Eye of Sauron and be themselves still.. Aragorn? Some of the council maybe. Great Eagle, quite likely not. They come to save ringbeare

How many could face the Eye of Sauron and be themselves still.. Aragorn? Some of the council maybe. Great Eagle, quite likely not. They come to save ringbearer once Sauron is overthrown. If they tried to do it when he was bending his whole being on finding the ring and possessing it they would fail and deliver it straight to him.