Police found a man, thought to have been cut with a knife, in Bracebridge Drive, Bilborough, at about 15:00 BST on Thursday.
A short time later the PCSO, who was involved in looking for the suspects, was attacked.
Two men were arrested and have been bailed pending further inquires.
The stab victim was taken to hospital but has since been released.
A Police Community Support Officer (PCSO) has been assaulted while trying to catch a man believed to have been involved in a stabbing in Nottingham.