A man who was defending pizzeria employees from an abusive customer early Tuesday morning was stabbed in the abdomen, Jersey City police said. The incident occurred at Stella’s on Grove Street, near Jersey City City Hall, at 1:30 a.m., city spokeswoman Kimberly Wallace-Scalcione said. The 25-year was rushed to a local hospital with an apparent life-threatening wound to his abdomen. He is now in stable condition, Wallace-Scalcione said. It appears that the victim and another man, 47-year-old Savark Dicupe, got into an argument over Dicupe’s treatment of employees inside the eatery. Dicupe was a…