I tried the FAQ and tried searching, and I didn't find my answers. So, please accept my apology if this has been answered, but, if it has, please direct me to that answer.
Short version: how does shadow evocation work when, for instance, a fireball is mimicked and some of the targets have resist energy (fire) or protection from energy (fire) and would it matter if such protected targets had reason to believe the caster were an illusionist?
Here's the long version:
Ilyana the illusionist casts a shadow evocation fireball at a group of folks.
Among the group of folks are...
Bob, who doesn't know Ilyana, and who has no reason to believe the fireball isn't entirely a fireball, and is unprotected,
Carol, who doesn't know Ilyana, and who has no reason to believe the fireball isn't entirely a fireball, and who has resist energy (fire),
Rod, who doesn't know Ilyana, and who has no reason to believe the fireball isn't entirely a fireball, and who has protection from energy (fire) at full strength
Cindy, who does know Ilyana, and who has been fooled before, and who has resist energy (fire),
Marta, who does know Ilyana, and who has been fooled before, and isn't resistant to fire,
Jamal, who does know Ilyana, and who has been fooled before, and who has protection from energy (fire) at full strength
Suppose Bob, Carol and Rod all fail their Reflex saves (assume no one has evasion, etc.). What happens to each target? Does Carol take 10 fewer points of fire damage than Bob? Does Carol's resist energy "know" that it's fire damage? Does it "know" that it's not? If Carol misses her save, and takes full fire damage, but knows that she has resist fire 10, does she now have a reason to disbelieve? Does Rod's protection absorb the whole thing? None of it?
What happens for Cindy, Marta and Jamal? Since Cindy is pretty sure Ilyana is using an illusion, does her resistance work regardless of how much she gets burned? What about Jamal? Does Jamal's protection absorb the entire thing? None of it?
After this blast, if there are weird, unexpected differences between them, would that satisfy getting
For reference... (I have made an important phrase bold.)
Shadow Evocation
You tap energy from the Plane of Shadow to cast a quasi-real, illusory version of a sorcerer or wizard evocation spell of 4th level or lower. Spells that deal damage have normal effects unless an affected creature succeeds on a Will save. Each disbelieving creature takes only one-fifth damage from the attack. If the disbelieved attack has a special effect other than damage, that effect is one-fifth as strong (if applicable) or only 20% likely to occur. If recognized as a shadow evocation, a damaging spell deals only one-fifth (20%) damage. Regardless of the result of the save to disbelieve, an affected creature is also allowed any save (or spell resistance) that the spell being simulated allows, but the save DC is set according to shadow evocation's level (5th) rather than the spell's normal level.
Protection from Energy
Protection from energy grants temporary immunity to the type of energy you specify when you cast it (acid, cold, electricity, fire, or sonic). When the spell absorbs 12 points per caster level of energy damage (to a maximum of 120 points at 10th level), it is discharged.
Resist Energy
This abjuration grants a creature limited protection from damage of whichever one of five energy types you select: acid, cold, electricity, fire, or sonic. The subject gains resist energy 10 against the energy type chosen, meaning that each time the creature is subjected to such damage (whether from a natural or magical source), that damage is reduced by 10 points before being applied to the creature's hit points. The value of the energy resistance granted increases to 20 points at 7th level and to a maximum of 30 points at 11th level. The spell protects the recipient's equipment as well.