Europe is more worried about Greece's financial crisis causing problems with larger economies such as Spain than Portugal and Ireland, Michael Noonan told RTE on Sunday.
"The European authorities are more worried about countries like Spain than they are about Ireland and Portugal," said the Irish finance minister, according to Reuters.
"The authorities that I have spoken to believe they can prevent contagion spreading to Ireland and Portugal but they have some concerns about the bigger European countries, and they are going to draw the line there.
"I presume they will bring other policy instruments forward as necessary."
He added that he expected Greece to win a crucial parliamentary vote on austerity measures this week.