Imam Mehandi A man is saying that he is Isa and there is no mehandi he lives In India, Aurangabaad.

There is a man name Shakeel bin haneef and one of friend is a supporter of him. And he always wants debate from me but I can't because I don't have that much knowledge. So please provide me some hadiths which can prove him wrong. He always says there is no imam mehendi but Isa it is written in ibn e Maja authentic hadiths. Please provide me some authentic hadiths with reference So that I can have debate on this topic and get my friend back on the right path.