POINT OF ORDER / RULING NEEDED:
I figured Broodhuz would use resistance. So, here is the issue and the feature for reference:
View attachment 252281
It provides resistance to "that instance of damage." Since scorching ray fires separate rays, I would think each rays, rolled individually for damage, would be an "instance".
So, the first ray that hits he would have resistance to, but not any other that hit. But, since it is one spell, I could understand if others feel that it would provide resistance to every ray, not just the first.
What to others think, option 1 or 2???
1. The resistance is to the first ray that hits only, each ray is a separate "instance of damage".
2. The resistance applies to all the rays, the spell is the "instance of damage."
I'll run it according to option 1, but if people feel option 2 is more appropriate I'll update Invulnar's turn later after work tonight.