أَلَمْ يَجْعَلْ كَيْدَهُمْ فِى تَضْلِيلٍ ٢
Sentence structure
أَ and لَمْ continue the question and make يَجْعَلْ jussive. كَيْدَهُمْ is its accusative object, while فِى تَضْلِيلٍۢ is a prepositional phrase linked to the verb.
Ayah summary
Allah caused their plan to fail completely.
أَلَمْ — Did ... not
Grammar: Prefixed interrogative أَ followed by negating and jussive particle لَمْ.
يَجْعَلْ — make / place
Grammar: A third-person masculine-singular imperfect made jussive by لَمْ; its subject is the hidden pronoun «هُوَ».
كَيْدَهُمْ — their plan
Grammar: كَيْدَ is the accusative object of يَجْعَلْ; attached هُمْ is its genitive possessive pronoun.
فِى — in
Grammar: A preposition governing the following noun; فِى تَضْلِيلٍۢ is linked to يَجْعَلْ.
تَضْلِيلٍۢ — ruin / failure
Grammar: An indefinite masculine genitive verbal noun governed by فِى.