Praise be to Allah, and may peace and blessings be upon the Messenger of Allah. To proceed:
The Antichrist (Al-Masih Al-Dajjal) is a man from the children of Adam. He will emerge at the end of time, and he is among the greatest trials and tribulations of the Hour. He will first claim to be a prophet, and then he will claim to be divine. Exalted is Allah far above what he claims. All the prophets warned their people against him. The Prophet, peace and blessings of Allah be upon him, explained that he will be one-eyed, and that the word “Kafir” (disbeliever) will be written between his eyes, which every believer will be able to read.
He will tempt people with extraordinary matters. He will claim the ability to bring the dead back to life, and he will present something resembling Paradise and Hell. He will kill a man, then Allah will permit that man to return to life, making this a trial and test for the people.
It is authentically established in Sahih Muslim that Jesus, son of Mary, peace be upon him, will catch up with the Dajjal at the Gate of Ludd and kill him.
The Dajjal will die persisting in disbelief because he will not renounce his false claim. Rather, he will continue in disbelief and in turning people away from the path of Allah until Jesus, peace be upon him, kills him.
It has been established that among the people who will suffer the most severe punishment on the Day of Resurrection is: “a man whom a prophet killed.” It is also reported from Ibn Abbas, may Allah be pleased with him and his father, that he said: “The anger of Allah is severe against the one whom a prophet kills.”
Accordingly, the Antichrist will be among the people of Hell; indeed, he will be among those who suffer the most severe punishment therein, because the greatest forms of disbelief, misguidance, and tribulation are combined in him, and because he will be killed by one of the prophets of Allah, namely Jesus, son of Mary, peace be upon him.
In conclusion: The Dajjal will die as a disbeliever after Jesus, peace be upon him, kills him. His fate in the Hereafter will be Hell, and he will be among the people who suffer the most severe punishment therein.
And Allah, the Most High, knows best.