The verse you are reciting in the Quran is true and fact, this verse rejects the false claim of the Jews and Christians that Hazrat Eisa (Alaihis Salam) was killed. There is no need of any other meaning of this dream. However, it may be that Allah will enable you to work against Christianity and Qadyanism, so this will serve as indication to preparation for the same.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband