[3:54] They [unbelievers] planned and God planned. But God is the best of planners.
Example: “A” went to the house of “B” to kill “B”. The desire of “A” is to see “B” dead. Just as “A” was about to kill “B”, he saw that “B” had died due to an illness or “B” had slipped, fallen, hit his head on the floor and died (no murder, natural death!). The plan of “A” succeeds. The Jews planned to kill Prophet Issa (peace be upon him) and if he died in whatever way, then it is a blasphemy towards Allah.
This part only refutes those who believe in the death of Prophet Issa (peace be upon him) on or before the cross. Thoe who believe in the Kashmir fallacy can ignore this section.