When Blake had gone off to battle the red hair and left him to fight Naomi, disregarding Blake's words or more aptly boast, Rehabab had already planned to finish and go help him.
Despite his warnings to Blake about the strength of the disciple of a champion, Rehabab had expected to quickly deal with Naomi disciple of the champion of light or not, but minutes later he found himself getting frustrated as he fought the woman.
In terms of speed and strength, Rehabab well outclassed Naomi and should have been able to easily crush her, but then after that one injury he had inflicted on the woman, when they met once more, he found that she had activated an armour that protected her forearms, legs and chest area and with just that, Rehabab found his efforts to kill her thwarted at each turn.