Cream-striped Owl moth , Cyligramma latona
Widespread and common in Subsaharan Africa, as well as Egypt. The larvae feed on Acacia.
Saw this while going for a wander up the back garden. I have encountered this species a couple of times, indoors, but never during the day outside. It was resting/hiding under an asparagus fern and must have got spooked as I passed.