Board Thread:Lore Discussion/@comment-24577193-20140222212506/@comment-24349111-20141211193039

Harold Burned-Mane wrote: From ESO we discover that they don't really worship any deities, like Ninja Khajiit previously said. They are connected to the Hist, yes, and do have rituals involving the Hist, but they don't worship them as gods or similar divine deities. Draevan's Blog has a quote from an Argonian NPC in the game that explains it well enough.

So it isn't left open, like Pelinal suggested. He clearly says that most of the Argonians don't worship any entities, be it the Hist or other deities like Daedric Princes or Divines. Some, however, most likely worship the Divines or some of the Princes. Like with any race not everyone worships the same deities or in the Argonian's case doesn't worship the same deities. Remember, ESO's canonicity depends on a person's own perspective. Many people don't believe that ESO can be considered as part of the main series' lore. We'll have to take ESO lore with a grain of salt as well.