Al Masih Ad Dajjal

Dajjāl is a common Arabic word (دجال) with the meaning "deceiving" or "impostor" Al-Masīḥ ad-Dajjāl, refers to "the deceiving Messiah", a specific end-of times deceiver.

Narrated 'Abdullah bin 'Umar: Allah's Apostle said. "While I was sleeping, I saw myself (in a dream) performing Tawaf around the Ka'ba. Behold, I saw a reddish-white man with lank hair, and water was dropping from his head. I asked, "Who is this?' They replied, 'The son of Mary.' Then I turned my face to see another man with a huge body, red complexion and curly hair and blind in one eye. His eye looked like a protruding out grape. They said (to me), He is Ad-Dajjal." The Prophet added, "The man he resembled most is Ibn Qatan, a man from the tribe of Khuza'a."

Narrated Ibn Umar: Once Allah's Apostle stood amongst the people, glorified and praised Allah as He deserved. Then, mentioning Dajjal, he said, "I warn you against him (i.e. the Dajjal) and there was no prophet but warned his nation against him. No doubt, Noah warned his nation against him but I tell you about him something of which no prophet told his nation before me. You should know that he is one-eyed, and Allah is not one-eyed."

Every Messenger of God did warn his nation about the trials of Dajjal. God, however, delayed Dajjal’s birth and did not let him appear until now. Be aware! He will claim to be God and try to create doubts in your minds. Have a firm belief, the one-eyed creature cannot be your Lord. He will claim to have come with the gifts of paradise and arsenal of hell

Ali was reported to have said:

His right eye will be punctured, and his left eye would be raised to his forehead and will be sparkling like a star. Only the believers will be able to read the word ‘Kufr’ [disbelief], inscribed in bold letters, on his forehead. There will be big mountains of smoke at both front and backsides of his caravan. People will anticipate food within those mountains, during the severe famine.All rivers, falling in his way, will become dry and he will call upon people in aloud voice, "O my friends come to me! I am your lord who has made your limbs and given you sustenance.

Anas b. Malik reported that Allah's Messenger said: There is never a prophet who has not warned the Ummah of that one-eyed liar; behold he is one-eyed and your Lord is not one-eyed. On his forehead are the letters k. f. r. (Kafir)

While shia believe that Dajjal will be killed by Muhammad al-Mahdi, sunni said that that Isa who will kill Al Masih al Dajjal.