There are several ways to read this question:
1) What countries in Saudi Arabia are most remote from Islam? -- This is a nonsense question since Saudi Arabia is a country and has no other countries within it. Saudi Arabia is also an Islamic State and has a peculiar requirement that nobody can be a citizen of Saudi Arabia unless he is Muslim.
2) What country/region is most remote from Saudi Arabia? -- The antipode of Saudi Arabia is in the South Pacific, near French Polynesia.
3) What country is most remote from Islam? -- There are a few countries with almost no Muslims, like Iceland and Bolivia.
4) What country practices the most divergent form of Islam from what is practiced in Saudi Arabia? -- Iran and it is the only Muslim-majority country which has consistently criticized Saudi Wahhabi Islam.
Islam started from Makkah which is now in Saudi Arabia.
for Shia Islam Iran and Iraq for sunni Islam Egypt and Saudi Arabia
The main religion of Saudi Arabia is Islam
Saudi Arabia's primary religion (along with most of the Middle East) is Islam.
Islam followers (Muslims) are from many countries like Egypt, Iran, Saudi Arabia, Pakistan, Afghanistan and many western countries.
Islam, since being a citizen of Saudi Arabia legally requires you to be a Muslim.
In Arabia the city of Mecca which is part of Saudi Arabia.
Saudi Arabia
lots of countries because Islam is everywhere... but Saudi Arabia and Indonesia are the most extraordinary.
Islam is the main religion of Saudi Arabia.
Saudi Arabia, UAE, and Pakistan are some of the countries Muslims populate.
Afghanistan, Yemen, Saudi Arabia, and Iran.