A UN convoy with Irish troops on board narrowly avoided being hit by an airstrike in south Lebanon on Saturday evening.
Eight troops, six Irish and two Polish, were on patrol when there was an air attack on a village.
The Tánaiste confirmed the incident yesterday afternoon and said nobody was injured in the attack.
However the vehicle the troops were travelling in was damaged.
He said this illustrates "the wider danger of the war".
He said an investigation is under way into what happened, but he understands that it was a drone strike or an airstrike.
In a statement, the Defence Forces confirmed that at about 8pm local time on Saturday, a two-vehicle patrol in the IRISHPOLBATT area of operations in UNIFIL south Lebanon was caught in "an explosive blast of unknown origin".
"The Defence Forces can confirm all personnel are safe and accounted for," the statement added.
"There were no casualties, and both vehicles and all personnel recovered to the Irish position of UNP 245."
The 124th Infantry Battalion will continue to conduct framework operations and remain "the eyes and ears in south Lebanon for the international community".
Fears are growing of a possible broader conflict in the Middle East.
Iran has vowed to retaliate after Hamas's leader Ismail Haniyeh was assassinated in Tehran and Israel killed a top commander of Lebanese militant group Hezbollah in a strike on a Beirut suburb.
Hezbollah said it launched a drone attack against military positions in northern Israel.
Israel's military said unspecified damage was reported but no casualties and that it struck several Hezbollah military structures in southern Lebanon.
It comes as Taoiseach Simon Harris said the "world is standing at the precipice of a horrific moment" and called for an urgent review of the EU-Israel Association Agreement.
Additional reporting Reuters
