The Battle of Akraba was fought in 632 between the forces of Abu Bakr and the forces of Mosailima. Abu Bakr's forces won the battle. Mosailima may have been killed during the fighting. Events Abu Bakr becomes first caliph or Successor of the Prophet, leader of Islam Abu Bakr defeats Mosailima in the Battle of Akraba. ... Abu Bakr As Siddiq (Arabic ابو بكر الصديق, alternative spellings, Abubakar, Abi Bakr, Abu Bakar) (c. ... Mosailima was an arab manm who falsely clamed that he was a prophet. ...