"They will say it is my fault if ministers from the PDL are weighing their resignations," Berlusconi said in an interview with Catholic weekly Tempi, referring to the People of Freedom party that he founded.
"But I ask myself, if two friends are in a boat and one of them throws the other into the sea, whose fault is it if the boat then drifts off course?" he said.
Berlusconi earlier this month received his first definitive conviction in decades of legal battles in a landmark supreme court decision that has put Italy's political scene on edge once again.
The August 1 ruling has raised tensions in an uneasy coalition whose two main members are the centre-left Democratic Party (PD) and its historic arch-rival, the PDL.
There are five PDL ministers in the government.
The PD has said it will vote to eject Berlusconi from the Senate following the conviction and in accordance with new rules to get criminals out of parliament but the PDL questions whether these apply to Berlusconi.
Fans of the ageing playboy are also hoping for a last resort solution -- a pardon from President Giorgio Napolitano, although critics say that such a decision could seriously undermine Italy's credibility.
Luigi Amicone, the editor of Tempi, a publication run by the Catholic conservative movement Communion and Liberation, said Berlusconi's comments mean the government "has little time left".
"Enrico Letta has burnt the bridges of dialogue for a fair parliamentary solution to the killer sentence from the supreme court," Amicone said.
He said he had been "deprived of freedom of speech".
Berlusconi, 76, has been a member of parliament since 1994 when the billionaire tycoon first entered politics, becoming a headline act for the next two decades.
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