Nestor realizes that the battle is not going as well as he would like and says, "We should either move in, to a better position, or move out to a more defensible ground!"

Trying to spot a way to move up and attack the human cleric, Nestor will take whatever attacks present themselves, until he is able to move close enough to attack the evil cleric.
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.