Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Hellfire in a dream indicates strife, evil, and an unjust ruler. Entering it indicates committing major sins. Exiting it is repentance and salvation.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Hellfire indicates poverty and worry. Whoever sees himself eat from it is consuming unlawful money.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Hellfire is interpreted as torment. Whoever sees himself being tormented in it will be afflicted with great worry.