All of the countries that surround Israel have a different culture and religion than Israel. Israel is a Western Jewish culture, whereas Lebanon, Syria, Jordan, the Palestinian Territories (both the West Bank and the Gaza Strip), and Egypt have a Arab Islamic culture.

Israel is bordered by Lebanon to the north, Syria to the northeast, Jordan and the Palestinian Territories (West Bank) to the east, and Egypt and the Gaza Strip to the southwest.

All of these countries have a different culture and religion than Israel. Israel is a Western Jewish culture, whereas Lebanon, Syria, Jordan, the Palestinian Territories (both the West Bank and the Gaza Strip), and Egypt have a Arab Islamic culture.

Sistrum

" ... who blesses his nation Israel with peace."

When you discount the Jews, you are discounting the overwhelming cultural diversity that the Jews brought to Israel as a collective. (It would be like saying "Aside from the Whites, what racial group mostly influenced the culture of the USA?).

However, the answer is that the Palestinian Arabs were the ethnic group that influenced the culture of Israel most strongly.