This article makes it sound like the Irish troops had a long a valiant battle with militants from Syria. Looks like to me, thanks to the lack of information, that the Irish simply situated themselves between the fellow UN troops retreating and the pursuing Syrian militants. Luck would have it that the (yuk yuk, pun intended) Syrians decided to not engage.
While I have no issues with the Irish, having this subject be headlines anywhere but in Ireland would be a bit over the top. I'd be more impressed if the Irish would have sent a legit force to Iraq or Afghanistan under their own flag. But alas....