Thursday had seen extensive Israeli air strikes on Gaza in retaliation for the launching of more than 180 rockets and mortar rounds by Hamas and its allies on Wednesday night.
But an unofficial ceasefire agreement between the two foes went into effect around midnight (2100 GMT) on Thursday.
On Friday evening a few thousand Palestinians gathered along the border for weekly protests.
Qatati, who was in his 20s and a volunteer with the government medical services, was shot in the chest east of Rafah in southern Gaza, a health ministry spokesman told AFP.
He said another 25 Palestinians were hit by Israeli fire, with one in critical…