He placed the cross in Constantinople at first , and took it back to Jerusalem on 21 March 630 .
Thirteen years later , in 628 , the Byzantine Emperor Heraclius defeated Khosrau and regained the relic from Shahrbaraz .
Heraclius placed the cross in Constantinople at first , and took it back to Jerusalem on 21 March 630 .
Thirteen years later , in 628 , the Byzantine Emperor Heraclius defeated Khosrau and regained the relic from Shahrbaraz .