Elias Al Ashqar stands by a billboard bearing an obituary for his father Abdel Aziz in Nablus on Friday. AFP

When Israel conducted its deadliest raid in the occupied West Bank in almost two decades this week, a young Palestinian nurse rushed to help.

As critical case after critical case succumbed to their wounds, Elias Al Ashqar, 25, let out a blood-curdling roar.

"My father! My father," he screamed, as he realised his dad was among the 11 people killed in the raid on the flashpoint city of Nablus.

"I was on my regular shift in the hospital on Wednesday morning. I was busy with a group of medical students from An-Najah University," Ashqar told reporters.

It was then that the emergency department alarm bell sounded, warning of multiple incoming casualties, an increasingly frequent occurrence amid the growing violence of recent months.

As he entered, he saw two people on opposite beds.

"The doctors were trying to resuscitate them," he said, tears welling in his eyes.

"I helped the doctors with the first patient. He was young but soon died, so I tried to help save the life of the second man without looking at his face.

"The doctors were trying to resuscitate him, so I left them to help other cases... but I had a strange feeling the second wounded man belonged to me.

"I ran back and asked about him, and they told me that he had been martyred, so I subconsciously pulled back the curtain, and discovered that the martyr was my father."

Ashqar said his father Abdel Aziz, 65, had been returning from prayers in the Old City when he was caught up in the Israeli incursion. He said his father was unarmed.

As young men lined up to offer their condolences on Friday, Ashqar said his father had simply been going about his everyday life and lamented the prospects of ever winning justice for him.

"I don't know whether the Palestinian person is different to the European or American person," he said.

"We just wish we could have a life, we just want a life."

Agence France-Presse