It happened in Tallaght in the early hours of this morning.
Tabitha Monahan reports for RedFM News:
"The incident took place shortly after half past two this morning, while gardai were patrolling the Rossfield Avenue area of Tallaght.
While on patrol, the unarmed uniform Gardai came across three men, one in possession of a handgun and one in possession of a baseball bat.
The man armed with the handgun fired a number of shots towards the patrol car with one of the shots hitting the Garda car.
All three men then fled the scene.
No Gardaí were injured during the incident and a technical examination of the area will now take place."