Musnad Abu Ya'la al-Mawsili 115:175

Abu Musa narrated to us, Mu'adh ibn Hisham narrated to us, my father narrated to me, from Qatadah, from Anas, that the Prophet (peace and blessings of Allah be upon him) said: "The Dajjal has 'K-F-R' written between his eyes." Qatadah mentioned that every believer, whether illiterate or literate, will read it. He will emerge among a small number of people and a scarcity of food. He will enter all the cities of the Arabs except Tayyibah, which is Al-Madinah. A speaker said, "O Prophet of Allah, does he not want Al-Madinah?" He said, "Yes, but the angels are lined up at its mountain passes and its gates, guarding it."