Nevermind! I'm an idiot and walked straight past the answer
The key to the puzzle is within a book on a corpse within the Ancient Temple chamber. It will say on the second page that each god is a representation of an element or power:
Rhalic-Earth
Duna-Air
Tir Cendelius-Blood
Zorl Stissa-Fire
Vrogir-Fire
Xantessa-Mind
Amadia-Magic
Using this with the riddle gives the order: Amadia, Tir, Duna, Zorl, Xantessa, Vrogir, and finally Rhalic. After you hit all the pillars in the correct order, you will face another Eternal like Fane! Who will reveal that you are source vessels for the gods and then try to kill you
[Edited by L29eoec21fa67, 9/15/2017 1:24:21 AM]
The order of the pillars to light is:
Amadia
Tir Cend
Duna
Zorl
Xantezza
Vrogir
Rhalic
After that, prepare for a tough fight with a semidivine and 5 special summoned dogs. She keeps respawning them, so kill her first.