The Nāfuel would be the followers of Virūpākṣa (Pāli: Virūpakkha), one of many Four Heavenly Kings who guards the western path. They act as guards on Mount Sumeru, protecting the dēvas of Trāyastriṃśa from assaults via the asuras. This information may have irrelevant references to well-known tradition. You should support https://128.199.208.170/