"It is clear for all to see, of the aggressiveness and confrontational ways of Christians in bringing cases to court, their police reports all over the country and their press statements whether on the Allah or Al-Kitab issue.
"They all have something to do with their movement in spreading Christianity amongst the people," said Pembela president Yusri Mohamad.
He was speaking to reporters after Pembela's forum entitled 'Islam Under Siege: What Can We Do?'.
Adding that Christians are on a mission to convert Muslims in the country, he said that it all starts with confusing Muslims by using Islamic terms.
"It is their strategy to confuse Muslims by using terms and phrases which the Muslims commonly use," he said.
Pembela had previously stated that Islam was under "siege" particularly in relation to recent developments in Islam-Christian affairs.
He also claimed that Petal! ing Jaya in Selangor was the centre of this Christian activity, and that their "conversion" activities are becoming more open and bolder.
"If you go there, you can see that their leaflets and literature everywhere," he said.
Ikatan Muslimin Malaysia (Isma) president Zaid Kamarudin Abd Rahman also said that other threats to Islam include globalisation, liberalisation and pluralism.
"All Muslims must unite in defending Islam. If it is true that there is work to change the constitution to usurp the position of Islam by certain quarters, then we must react in equal measure," he said in his presentation.
"This has to be investigated. If this is true, we have to be careful," said Yusri.
"We will voice out our demands clearer. We won't ignore the laws of the country when fighting for our issue ! while in sisting that "we're not extremists."