RIYADH (Reuters) - Saudi Arabia's most revered cleric said in a rare fatwa this week that two writers should be tried for apostasy for their "heretical articles" and put to death if they do not repent.

Sheikh Abdul-Rahman al-Barrak was responding to recent articles in al-Riyadh newspaper that questioned the Sunni Muslim view in Saudi Arabia that adherents of other faiths should be considered unbelievers.

"Anyone who claims this has refuted Islam and should be tried in order to take it back. If not, he should be killed as an apostate from the religion of Islam," said the fatwa, or religious opinion, dated March 14 and published on Barrak's Web site.

"It is disgraceful that articles containing this kind of apostasy should be published in some papers of Saudi Arabia, the land of the two holy shrines," he said, referring to Muslim holy places in Mecca and Medina.