I'm sorry. I guess only Indy and Enso can tell what's going on here and if it's intended that the spell(s) vanish.
![Dunno +::Dunno](./images/smilies/40.gif)
But for the Tarku God you can use someone else to heal. I don't remember who can heal, but think I do remember that one of the other animals is a more effective healer anyway.
I also don't remember who I fought that enemy with, but Nestor might not be the best choice anyway. You could try with Katie, the two wolves and a healer. The wolves are much stronger than Nestor.