The fact that Adrian promised the High Priestess of Bastet that he will let her commune with her goddess is something not just anyone can say. They can be treated as blasphemous and be executed on the spot for even daring to say that.
The High Priestess of Bastet, who is named as Bahiti, tembled upon this news. She knows that she must punish the arrogant young kid for daring to look down on her goddess, but his proposal is too good. She knew that he manipulated the ley line earlier which means there is a good chance that what he is saying is correct.
When the High Priestess of Bastet Bahiti saw that the others were getting ready to attack, she immediately erected a barrier that protected Adrian and Dustan. Dustan became shocked as they were suddenly protected but Adrian smiled. The other priests of the Ennead are outraged that one of them actually protected the outsiders.
