A Philadelphia cheesesteak shop owner who was stabbed in the neck by an employee in a caught-on-camera attack says he didn’t even know the knife was still lodged in him.

Steve Mullan was attacked by 43-year-old employee Sean Walklett in the kitchen of Leo’s Steak Shop last Friday.

Surveillance video obtained by NBC10 allegedly shows Walklett lunging at his boss from behind and thrusting a 10-inch knife into his neck.

With the knife still poking out from his neck, Mullan could be seen fighting back against his employee.

As Mullan repeatedly threw punches, his son grabbed two knives and tried to ward off the employee, the footage shows.

After the attack, the store owner said, his son told him: “Dad, you have a knife in your neck … Don’t pull it out.”

The knife pierced through one side of Mullan’s neck and came out the other.

“It was a vibration like I was being electrocuted … Like I touched a live wire,” Mullan said of the stabbing.

A police officer who was directing traffic on the street outside the store responded and had to tase Walklett before he could be taken into custody.

Walklett, who had worked at the store for a year, has been charged with attempted murder, aggravated assault and a slew of other charges over the attack.

Police have not revealed a motive for the stabbing, but Mullan said he believes mental health issues played a role.

Walklett’s bail has been set at $950,000.