Something does answer Lucifer, though the presence he feels is not the somber righteousness of Cadaevos. Instead, it's more playful.

When the maggots have finished burning, the ground around him will vibrate and the ashes will begin to move. They form what appears to be yet another rune, but if Lucifer reorients himself correctly he will realize it is a smiley face turned on its side. Intriguingly, it's denoted in the manner that one might if one were familiar with digital communication: =]