Persian alphabet
After the Muslim conquest of Persia and the fall of Sasanian Empire in the 7th century , Arabic became the language of government and especially religion in Persia for two centuries . 
<triplet> Muslim conquest of Persia <subj> Sasanian Empire <obj> participant <triplet> Sasanian Empire <subj> Arabic <obj> language used <triplet> Persia <subj> Arabic <obj> official language