The Salafi-oriented Nour Party plans to not take part in commemorating the 25 January revolution Friday, party Secretary General Galal al-Morra said.
He said Thursday that the situation in Egypt can bear neither celebrations nor protests.
"[We will not participate] out of care for the country and the higher interests of [people] and because we fear the occurrence of violence, especially as some elements seek sabotage, instability and creating a state of chaos in the country," he said.
Opposition groups plan to commemorate the two-year anniversary by protesting against the Muslim Brotherhood in Tahrir Square.
Morra called on participants in 25 January protests to maintain nonviolence and to not attack public or private facilities. He said Nour Party advocates the peaceful expression of opinion.
"We are facing a lot of challenges that need us to work hard to rebuild a country that has been bulldozed over decades in various fields," he said.
Morra warned Egyptians in his statement of the seriousness of the stage Egypt is passing through, saying they have to work together to restore its international and Arab positions.
Morra stressed that Egyptians should be united against the problems left by the former regime.
Edited translation from Al-Masry Al-Youm