People will believe a liar, and disbelieve one who tells the truth at the time of the Dajjal

Anas ibn Malik said, "The Prophet said, 'The time of the Dajjal will be years of confusion. People will believe a liar, and disbelieve one who tells the truth. People will distrust one who is trustworthy, and trust one who is treacherous; and the Ruwaybidah will have a say.' Someone asked, 'Who are the Ruwaybidah?' He said, 'Those who rebel against Allah and will have a say in general affairs.'" (Ahmad.)

The Dajjal is the Arabic Antichrist

Appearance of Dajjal