A cikin 610, a lokacin Byzantine <unk> Sasanian War na 602 <unk> 628, Heraclius ya zama sarki na Daular Byzantine, bayan da ya kifar da Phocas. A halin yanzu, da Sasanian Empire nasara Mesopotamia da kuma a 611 suka mamaye Syria da kuma shiga Anatolia, mamaye Caesarea Mazaca (yanzu Kayseri, Turkey). Heraclius, a 612, gudanar ya fitar da Farisa daga Anatolia, amma aka cin nasara nasara a 613 a lokacin da ya kaddamar da wani babban hari a Syria da Farisa. A cikin shekaru goma da suka biyo baya Farisa sun sami damar cinye Falasdinu da Misira. A halin yanzu, Heraclius shirya kai hari da kuma sake gina sojojinsa. Shekaru tara daga baya a 622, Heraclius ya kaddamar da yaƙi. Bayan nasara a kan 'yan tawayen Larabawa da' yan tawayen Larabawa a Arabiya da kuma mafi yawan ƙasashen da suka mamaye Larabawa a karkashin Muhammad Bakr Bakr Muhammad da abokansa, sun mamaye Siriya da kuma shiga Anatoliya, suka mamaye Caesariya da yawa, suka yi nasara
Muhammadu