Indeed, those who believed and those who were Jews or Christians or Sabeans [before Prophet Muḥammad (ﷺ)] - those [among them] who believed in Allāh and the Last Day and did righteousness - will have their reward with their Lord, and no fear will there be concerning them, nor will they grieve1.
Translation: Saheeh International (English)
1 After the coming of Prophet Muḥammad (ﷺ) no religion other than Islām is acceptable to Allāh, as stated in 3:85.
Those who have faith from the nation of Muhammad (peace be upon him) and from the communities who came before him – from the Jews, the Christians and Sabians (said to be a group who followed prophets who were of the faith of Abraham, peace be upon him) – will have their reward with their Lord. They will not fear what awaits them in the Afterlife, nor grieve over what happened to them on earth. This was the case before the Prophet Muhammad (peace be upon him) was sent. Now his message of Islam – devotion and dedication to Allah – is the only way of life accepted by Allah, as He said, ‘Whoever seeks a path other than Islam, it will not be accepted from him’ [ Sūrah Āl ͑Imrān: 85].