The man identified as Ksupsikren was stabbed in his stomach and has been admitted to a hospital in Saket, police said, adding he is out of danger now.
A group of men waylaid the victim when he was returning home from work around 4 AM, they said.
"Prima facie it seems to be a case of robbery. The men tried to snatch his mobile and when he resisted, they stabbed him and fled from the spot," a police official said.
The incident comes two days after two youths from Manipur were allegedly beaten with sticks in Ambedkar Nagar area of south Delhi on Sunday night.
A youth from Arunachal Pradesh recently died after he was allegedly assaulted by some shopkeepers in Lajpat Nagar area. A 14-year-old Manipuri girl was raped in south Delhi's Munirka area last week.