al-Dajjal ("The Deceiver/impostor" ) is an evil figure in
Islamic eschatology, who will appear before Yawm al-Qiyamah
(Resurrestion Day). He is similar to the Antichrist in
Christianity
"Dajjal" is a common Arabic word, used in the sense of "false
prophet". But "Al-Dajjal", with the definite article, refers to
"The Impostor", a specific end-of time deceiver. It is worthy to
note that the term Al-Masih Ad-Dajjal (Arabic for "The False
Messiah" ) is a literal translation of the Syriac term "Meshiha
Deghala", which had been in the common vocabulary of the Middle
East for more than 400 years prior to the Quran via the Peshitta
(which uses that term instead of the Greek "antichristos" ).
Source frm http://en.wikipedia.org/wiki/Dajjal