That is the recompense of the enemies of Allah - the Fire. (41:28)

﴿ذَٰلِكَ جَزَاءُ أَعْدَاءِ اللَّهِ النَّارُ ۖ لَهُمْ فِيهَا دَارُ الْخُلْدِ ۖ جَزَاءً بِمَا كَانُوا بِآيَاتِنَا يَجْحَدُونَ﴾
[ فصلت: 28]

41:28 That is the recompense of the enemies of Allah - the Fire. For them therein is the home of eternity as recompense for what they, of Our verses, were rejecting.

That aforementioned requital is the requital of those who disbelieved in Him and rejected His messengers; it is the hellfire which they will live forever never to come out of it.
It is a requital for their rejection of the verses of Allah and not believing in them despite their clarity and strength in proof.

That is the recompense of the enemies of Allah: The Fire, therein will be for them the eternal home, a (deserving) recompense for that they used to deny Our Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.).

phonetic Transliteration

Thalika jazao aAAdai Allahi alnnaru lahum feeha daru alkhuldi jazaan bima kanoo biayatina yajhadoona

Abdullah Yusuf Ali - Translation

Such is the requital of the enemies of Allah,- the Fire: therein will be for them the Eternal Home: a (fit) requital, for that they were wont to reject Our Signs.

Safi-ur-Rahman al-Mubarakpuri

That is the recompense of the enemies of Allah: the Fire. Therein will be for them the eternal home, a recompense for that they used to deny Our Ayat.

Page 479 English transliteration