Recently, I encountered one of the abilities of Sanctified One:
Holy Fire (Su): Whenever you cast a spell with the fire subtype, you can choose to change all the fire damage it deals into raw divine damage that is treated as good-aligned for the purpose of overcoming damage reduction. This choice must be made at the time of casting.
(Complete Champion, emphasis mine)
However, the points about damage reduction seems kind of moot, as the d20srd says:
The creature takes normal damage from energy attacks (even nonmagical ones), spells, spell-like abilities, and supernatural abilities.
The way I see it is that the spell in question is not concerned with DR anyways, so it really doesn't need to and cannot overcome it. Am I missing something, or did the writers of this class miss something?