Will we get to live during the arrival of Imam Mahdi, Prophet Isa (as), and the Dajjal? Will we be resurrected to witness such events, or would only people who live on earth at those times get to experience them?
Raj’at or Raj’ah الرَجعَة means the return to this life after death. This return will be during the government of Imam Al-Mahdi (AS) over the whole world. Allah will bring back to this world the best believers to witness the victory of Ahlul Bayt (AS). Allah will also bring back to this world the worst enemies of Islam to see that and get some of the results of their evil deeds.
Raj’ah is mentioned in Quran (Sura Ghaafir, verse 11).
Wassalam.