Nestor sees the advantage that flanking the evil cleric will give and moves directly opposite one of his companions, surrounding the evil one.

"You cannot overcome the will of the Invincible!" Nestor shouts at the man.
I have no other love, no greater desire, than to be wholly given to the Commander's service, but man's heart is too easily corrupted and his mind too quickly weakened to hold faith in my own heart and mind. I believe that it is far wiser to trust only in the Invincible.