The second coming of Prophet Jesus (pbuh) is not a belief that is supported by the Quran. There are numerous verses and theological juxtapositions which actually serve to negate the concept.
There is also absolutely no mention of Masih ad-Dajjal (False Messiah / Antichrist) in the Quran or of the trial that he will allegedly inflict. These beliefs emanate from Islamic secondary sources, not the Quran.
Dajaal is formed from the root word 'Dal-Jiim'Lam' which means to smear a camel with tar to conceal its bodily defects and further means to lie, mix, confuse and to conceal the truth with falsehood. Dajaal is also synonymous with 'Sihr' which means to make false appear to be true and to cause something to be imagined differently from what it really is; to deceive, beguile, delude, to embellish by falsification or deceit and is a kind of enchantment, or fascination which captivates.
The fact that such a major trial has escaped total mention in the Quran is an extremely difficult proposition to accept and should not be taken lightly for earnest searchers of the truth. This is especially true if we consider the following verse which claims that the Book of God (Quran) is fully detailed for mankind's guidance.
006:114
"Say: "Shall I seek for judge other than God? - when He is the One who has sent to you the Book, explained in detail (Arabic: Mufassalan)." They know full well, to whom We have given the Book, that it has been sent down from your Lord in truth. Never be then of those who doubt"