81:12

وَإِذَا الْجَحِيمُ سُعِّرَتْ

Transliteration:

Wa-itha aljaheemu suAAAAirat

Word by Word:

And when the Hellfire is set ablaze,

Translations:

and when the blazing fire [of hell] is kindled bright,

When the Blazing Fire is kindled to fierce heat;

And when hell is lighted,

And when hell is kindled,

And when Hellfire is set ablaze