CAIRO/WASHINGTON/SYDNEY (AFP) A senior Egyptian cleric on Sunday condemned a group of Christians who tore up pages of the Holy Quran outside the White House on the anniversary of 9/11 saying their act was despicable. They are a minority full of rancour, blinded by extremism and bad intentions aimed at undermining Islam, the grand Imam of Al-Azhar mosque Sheikh Ahmed al-Tayeb said according to the official MENA news agency. "Their despicable act will not harm the Quran ", he said about a small group of conservative Christians who on Saturday tore some pages from a Quran in a protest outside the White House. The tiny protest came as the US marked the sombre ninth anniversary of the September 11 attacks amid heightened tensions following a radical Florida pastors threat to burn the Quran. The pastor later decided not to go ahead with the torching of Islams sacred book. In Washington, a small group of conservative Christians tore some pages from a copy of Holy Quran in a protest outside the White House Saturday on the occasion of anniversary of 9/11. Part of why were doing that, please hear me: the charade that Islam is a peaceful religion must end, said Randall Terry, a leading anti-abortion campaigner, and one of six people who took part in Saturdays protest. Another activist, Andrew Beacham, read out a few Holy Quran passages calling for hatred towards Christians and Jews, and then ripped those pages from an English paperback edition of the book. Meanwhile, two top Iranian clerics said anyone desecrating the Holy Quran must be killed, Fars news agency reported, as hundreds of people protested Monday outside the Swiss embassy in Tehran. From the point of view of Islamic jurisprudence, strong objection to such thoughts is mandatory and necessary and killing the people who have committed this act is compulsory, Ayatollah Hossein Nouri Hamedani was quoted as saying by Fars. His view was echoed by Ayatollah Naser Makarem Shirazi who added that such a response must be taken after consulting a religious judge. The blood of the person who burns the Holy Quran can undoubtedly be shed. But in this issue, no action should be taken without the permission of a religious judge, Makarem Shirazi told Fars. Meanwhile up to 500 people demonstrated outside the Swiss Embassy in northern Tehran in protest against the US over the Quran-burning issue. An AFP photographer said the crowd tried to get into the Embassy, but the guards prevented them from entering the premises. In Sydney, an Australian lawyer tore pages from the Holy Quran and the Bible and smoked them on YouTube, days after a US pastors threat to burn Islams holy book triggered deadly protests and global condemnation. In a 12-minute clip entitled Bible or Quran - which burns best? Alex Stewart, who belongs to an atheist group, holds up the Christian and Muslim holy books before tearing out pages and smoking them. At one point he lights what looks like a joint rolled from a page from the Bible, leans back after inhaling heavily and says Holy.