A subway rider was stabbed in the hand and punched in the nose during an argument over a bike that was blocking elevator doors at NYC’s Grand Central Station early Saturday, cops said.  The

victim, 28, was on the mezzanine level of the 7 train waiting for the elevator at around 9 a.m. when he and the cyclist began beefing over the bike, cops said. The victim was taken to

Bellevue Hospital in stable condition. The punch left him with a cut on his nose, cops said. Police were looking for video of the incident and searching for the attacker.