The Quran instructs Muslims to treat non-Muslims courteously in a spirit of kindness and generosity and utter most respect.

“And if anyone of the Mushrikoon (polytheists, idolaters, pagans, disbelievers in the Oneness of Allaah) seeks your protection then grant him protection so that he may hear the Word of Allaah (the Qur’aan) and then escort him to where he can be secure”

[al-Tawbah 9:6]