عَلَيْهِمْ نَارٌۭ مُّؤْصَدَةٌۢ
Sentence structure
عَلَيْهِمْ is the fronted prepositional predicate. نَارٌ is the delayed nominative topic, and مُّؤْصَدَةٌ is its feminine nominative adjective.
Ayah summary
They will be enclosed in the Fire from every side.
عَلَيْهِمْ — Over them
Grammar: عَلَىٰ is a preposition and attached هِمْ a masculine-plural genitive pronoun; the phrase is the fronted predicate.
نَارٌۭ — (will be the) Fire
Grammar: An indefinite feminine-singular nominative delayed topic.
مُّؤْصَدَةٌۢ — closed in
Grammar: An indefinite feminine-singular nominative passive-participle adjective of نَارٌ.