Report to Ghaliri at Fort Livingston in Northern Stranglethorn.
Priestess is not very good at speaking Common, no.
Maybe you go speak with Ghaliri, in front of that tent.
Tell him about what you've seen inside Zul'Gurub, yes.
You will also receive:
- 7,790 experience
- 75 (or 2 13 if completed at level 110)
- 500 reputation with Exodar