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 Falasɗinu 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 suka mamaye mafi yawan ƙasashen Larabawa da suka mamaye Muhammadu Muhammad Bakr da abokansa, sai suka mamaye Syria suka shiga Anatoliya, suka mamaye Caesarea Mazahara, wanda ya yi
Yuni na shekara ta 632