Лев Диакон
Skleros eventually set out from the city, and divided his forces into three groups: two divisions were placed in ambush on the wooded sides of the road leading towards the Rus' camp, while another, probably some 2,000–3,000 men, was placed under himself (or Alakaseus in Skylitzes' account) and went forth to attack the Rus' host. The Byzantine detachment quickly came into contact with the Rus' army, and charged the Pecheneg contingent. The Byzantines executed a gradual orderly retreat, turning at intervals to charge back at the pursuing Pechenegs, who had thus become separated from the main body of the Rus' army. This conflict was fierce and bloody, taxing the discipline and endurance of the small Byzantine force. According to Leo the Deacon, at one point one of the Pechenegs charged Bardas himself and delivered a sword blow on his helmet, which was deflected by the metal without doing harm. Bardas' young brother Constantine came to his rescue, killing the Pecheneg.