One of the most powerful and effective duas for protection from Hellfire is the following prayer

 

"Rabbanaa aatinaa fid-dunyaa hasanatan wa fil-aakhirati hasanatan waqinaa ‘adhaaban-naar"

The English translation of this prayer is:

"Our Lord, give us good in this world and good in the Hereafter and protect us from the punishment of the Hellfire."

This dua is taken from Surah Al-Baqarah, Verse 201, and it is a powerful supplication to Allah for protection from the punishment of the Hellfire. Muslims are encouraged to recite this dua regularly, especially after the daily prayers or whenever they feel the need for Allah's protection. By seeking Allah's protection and guidance, Muslims can strengthen their faith and trust in Allah and avoid the dangers of the Hellfire.