فِي نَارِ جَهَنَّمَ

فِي نَارِ جَهَنَّمَ is a phrase (شِبْهُ الجُمْلَةِ) consisting of a particle and a possessive nominal compound

PhraseParticle/Noun/NounNounNounParticle
شِبْهُ الجُمْلَةِ جَارٌ وَمَجْرُوْرٌ وَهُوَ مُضَافٌ وَ مُضَافٌ إِلَيْهِمُضَافٌ إِلَيْهِاسْمٌ مَجْرُوْرٌ وَهُوَ مَضَافٌحَرْفُ جَرٍّ
PhraseCompoundpossessive nounGenitive noun + Noun possessedParticle of pulling down
  
in the fire of Hellفِي نَارِ جَهَنَّمَ=جَهَنَّمَ+نَارِ+فِي
 in the fire of HellHellthe fire ofin
Surah/Below are the 3 verses in the holy Quran containing the compoundفِي نَارِ جَهَنَّمَ
Aayat
On the day it will be heated in the fire of hell and will be branded with itيَوْمَ يُحْمَى عَلَيْهَا فِيْ نَارِ جَهَنَّمَ فَتُقْوَى بِهَا
their foreheads and their flanks and their backsجِبَاهُهُمْ وَجُنُوْبُهُمْ وَظُهُوْرُهُمْ
9-35“This is what you hoarded for yourselves so taste what you used to hoard”هَذَا مَا كَنَزْتُمْ لِأَنْفُسِكُمْ فَذًُوْقُوا مَا كُنْتُمْ تَكْنِزُوْنَ
then is one who founded his building on fear of Allah (SWT) and His pleasureأَفَمَنْ أَسَّسَ بُنْيَانَهُ عَلَى تَقْوَى مِنَ اللهِ وَرِضْوَانٍ
better or who founded his building on the edge of a cliff about to collapse so, it collapsed with him (in it)خَيْرٌ أَم مَّنْ أَسَّسَ بُنْيَانَهُ عَلَى شَفَا جُرُفٍ هَارٍ فَانْهَارَ بِهِ
9-109in the fire of Hell and Allah (SWT) does not guide the wrongdoing peopleفِيْ نَارِ جَهَنَّمَ وَاللهُ لَا يَهْدِي القَوْمَ الظَّالِمِيْنَ
Truly those who disbelieve from the people of the book and the polytheists will be in the fire of hellإِنَّ الَّذِيْنَ كَفَرُوْا مِنْ أَهْلِ الْكِتَابِ وَالْمُشْرِكِيْنَ فِي نَارِ جَهَنَّمَ
98-6abiding therein forever, those are the worst of creaturesخَالِدِيْنَ فِيهَآ أُوْلَآئِكَ هُمْ شَرُّ البَرِيَّةِ