Newly released bodycam footage captured the moment an NYPD cop opened fire on a defiant machete-wielding nut who slashed three straphangers at Grand Center Terminal last month.

The harrowing video released by the NYPD Friday shows two officers patrolling the transit hub on April 11 when Anthony Griffin started walking up the stairs from the 4, 5, 6, subway platform clutching a large machete.

Cops then frantically ordered the 44-year-old to drop the weapon over two dozen times. 

Griffin flared his arms wide while gripping the roughly 17-inch knife in his right hand and erratically shouting “shoot me, please,” before running back down the stairs onto the platform.

Detective Ryan Giuffre, who had drawn his gun, chased the suspect, who then turned and kept coming at the cop while flashing the machete — despite being repeatedly told to stop, the video showed.

“Listen, get on the ground, please,” Giuffre pleaded while backing away from the madman.

“Get on the f—king ground, get on the f—king ground. Nobody wants to hurt you. We can talk about this. Get down. Dude, I’m not going to ask you again, please. We are going to get you help.”

Griffin eerily yelled “I am Lucifer” twice before advancing toward Giuffre, who then fired two shots, leaving the crazed perp flailing his legs while lying face down on the ground, according to the bodycam footage.

The unhinged man, previously busted for menacing with a sharp object, was rushed to Bellevue Hospital, where he was pronounced dead a short time later, cops and sources said.

The two detectives involved, who were working overtime providing transit security, were also taken to the hospital to be treated for tinnitus, police said.

Prior to the fatal encounter, Griffin slashed three elderly people in an unprovoked rampage on the platform just before 9:40 a.m.

Police said an 85-year-old man was left with a deep gash across his head, a 65-year-old man suffered head cuts, and a 70-year-old woman was slashed in the shoulder.

The victims were taken to local hospitals in stable condition.

The investigation into the police-involved shooting is ongoing.