It is narrated from Sayyiduna Samurah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Indeed, the Dajjal is going to emerge, and he will be blind in the left eye, with a thick growth (a fleshy membrane) over it. He will heal the one born blind and the leper, and bring the dead to life, and he will say to the people: I am your lord. So whoever says: You are my lord, has fabricated a lie; and whoever says: My Lord is Allah, until he dies upon that, has been protected from the trial of the Dajjal." And this wording is that of Khalil bin Murrah.
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 6888