Fianna Fáil leader Micheál Martin has said that it would be a disgrace if the Taoiseach had suggested that the affairs of Northern Ireland were not "our" business.
Speaking at a Fianna Fáil gathering in Dublin tonight, Mr Martin said the Ulster Unionist Party leader was told that by Enda Kenny last week.
Mr Martin said that if that account was true, it was a disgrace and a direct abandonment of the dynamic central role to every major achievement of the peace process.
Earlier this week Taoiseach Enda Kenny had said to the Ulster Unionist Party leader Mike Nesbitt: "that the Irish Government's role would not touch on internal Stormont issues."
At the Cáirde Fáil dinner, Mr Martin also said that after the next election, there would be a special Ard Fhéis for members to decide whether the party could go into Government.
He said there would be no private deals.
Mr Martin also attacked the Government's Budget calling it the first of two election Budgets which he said was leading to a two-tier recovery.
Elsewhere, the leader of Northern Ireland's Ulster Unionist Party has said that he wants to have an electoral pact with the DUP in two constituencies for next year's Westminster Elections.
Northern Ireland will elect 18 Westminister MP's in next years elections.
In two of those contests Mike Nesbitt wants to make an electoral pact with the DUP.
The Ulster Unionists say that they will allow sitting DUP MP, Nigel Dodds, a free run in North Belfast where Sinn Féin's Gerry Kelly has him under pressure.
In return the UUP will want the DUP to stand aside in Fermanagh South Tryone and let them try to unseat Sinn Féin's Michelle Gildernew.
