From the Oracle Flame mystery
Spoiler:
Burning Magic (Su): Whenever a creature fails a saving throw and takes fire damage from one of your spells, it catches on fire. This fire deals 1 point of fire damage per spell level at the beginning of the burning creature’s turn. The fire lasts for 1d4 rounds, but it can be extinguished as a move action if the creature succeeds at a Reflex save (using the spell’s DC). Dousing the creature with water as a standard action grants a +2 bonus on this save, while immersing the creature in water automatically extinguishes the fire. Spells that do not grant a save do not cause a creature to catch on fire.
Does this apply also to the other revelations from Flame, like Fire Breath or Touch of Flame, or really just spells?
Just spells. There is no indication in the wording that it would do otherwise.