Guardian of Peace

ASK FANTASY FLIGHT 

Q: Preparation for Battle is in play. Because of this objective, a Guardian of Peace that is shielded while the dial is 4 or lower cannot take any damage. Does this mean she can use her protect keyword to divert the first 2 damage of every strike to her and not get damaged?

A: You would not be able to use the protect keyword if the protecting unit cannot be damaged.