Here is the situation, in the last session a pc failed both his saves against phantasmal killer, but the dm argued that spellcraft and/or arcane sight can still save him, quoting the rules
Given that phantasmal killer is an illusion (disbelief), and in the text of the spell there's nothing that contradicts the general rules of illusion the dm argued that if you succeed the spellcraft check you have the proof that the phantasmal killer isn't real and you don't have to save or at least you should gain a bonus on your saving throw, but the party (especially the player) wasn't sure of the interpretation.
So the question is, what do you think the raw answer is? and how would you have ruled if you were the dm? is there an official answer to this question?
[h=5]Saving Throws and Illusions (Disbelief)[/h] Creatures encountering an illusion usually do not receive saving throws to recognize it as illusory until they study it carefully or interact with it in some fashion.
A successful saving throw against an illusion reveals it to be false, but a figment or phantasm remains as a translucent outline.
A failed saving throw indicates that a character fails to notice something is amiss. A character faced with proof that an illusion isn’t real needs no saving throw. If any viewer successfully disbelieves an illusion and communicates this fact to others, each such viewer gains a saving throw with a +4 bonus.
.Phantasmal Killer
[....]
Saving Throw: Will disbelief (if interacted with), then Fortitude partial; see text
[...]
The target first gets a Will Save to recognize the image as unreal. [...]
Given that phantasmal killer is an illusion (disbelief), and in the text of the spell there's nothing that contradicts the general rules of illusion the dm argued that if you succeed the spellcraft check you have the proof that the phantasmal killer isn't real and you don't have to save or at least you should gain a bonus on your saving throw, but the party (especially the player) wasn't sure of the interpretation.
So the question is, what do you think the raw answer is? and how would you have ruled if you were the dm? is there an official answer to this question?