Comentario citado sobre Génesis 14:3

כי אש קדחה באפי, “for a fire is kindled in My ostril;” the jealousy kindled that fire in G-d’s nostril. An alternate interpretation of this simile: though written in the active mode, this word is to be understood as if it had been written in the passive mode, i.e. נקדחה. We have other examples of words written in the active mode actually portraying something that has happened, i.e. passive; one such example is found in Genesis 14,3: כל אלה חברו, “all these (kings) came together,” whereas we would have expected the reflexive/passive mode נתחברו. (Compare Ibn Ezra)

ignites “Jealousy”, or “that which they do” is the implied subject of this verb, which we find used only transitively (e.g., “for you have kindled fire in My nostrils” [Jeremiah 17: 4]). But it is also plausible that here the word means is ignited (as in “all these joined” [Genesis 14: 3] — meaning, were joined). In any case, the image denotes anger.