Arak grabs the cleric, and (gently) choke slams him to the ground, forcing him out of harms way.
"When I told you to take a bath, I didn't expect you to do it at the expense of a fellow orc. Keep to the back, and twiddle your fingers or something - he might need some healing"
Arak then charges up to stand by his brother, prepared to protect him with some magic if necessary, or if he's seriously threatened, he will cast his most offensive spell on the enemy hurting either himself or Thak.