The historical reliability of the resurrection has been attacked from the very beginning. We see it develop with the guards mentioned in Matthew’s gospel. Prior to the resurrection, they were positioned to protect against the development of a resurrection rumor. After the resurrection, they were paid to cast doubt on its reality.
Read about their attempts in Matthew 27:62-66; 28:11-15
Equip yourself to better defend the reliability for the resurrection by listening to this brief interview with an expert: https://www.youtube.com/watch?v=tKb6tmxljr4