Answer
In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
False Messiah is called al-Maseeh al-Dajjal; he is the false Messiah who will be sent before the Hour; he would work to turn people away from the truth. For why he is given this name, see the detailed answer.
In responding to your question, Sheikh Ahmad Kutty, a senior lecturer and an Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, states:
False Messiah is called al-Maseeh al-Dajjal; he is the false Messiah who will be sent before the Hour; he would work to turn people away from the truth.
There are two opinions about why he is called Maseeh. One of them is that he is called Maseeh because he is one-eyed, and his other eye is as if wiped out.
Another view is that he is given some extraordinary powers like Jesus, but unlike Jesus, he will use them to turn the people away from the way of Allah. He would claim divine powers and call people to worship him. That is why he is called the false Messiah.
Although he would mislead many, he cannot deceive the believers as they will recognize the sign written on his forehead, which they can read ‘kaafir or rejector of truth’.
Jesus, the true Messiah, will defeat him. Jesus will slay him in combat, and that will be the end of his story.
I pray to Allah to save us from all trials and tribulations, including that of the false Messiah, and help us remain steadfast on the straight path.
Almighty Allah knows best.