To illustrate this question, take the following example. Say a Red Dragon uses his fire breath attack against a level 10 rogue. The rogue passes his reflex save. Should the rogue be, say, moved to the closest available square that is not within the radius? Otherwise I can't really understand how they were able to "dodge" a wall of flame. And thus, if the rogue is backed into a corner, should the reflex save be unavailable to them? I know there is no mention of any of this in any core books, but I am interested to see how others handle this situation. I am considering making it a house rule but first I'd like to see your opinions. Thank you in advance.