Where does “Ромуллоҳ” come from?

Ромуллоҳ (Tajik) comes from Classical Persian رَامُ‌ٱللّٰه, from Arabic رام الله, from South Levantine Arabic الله, from Arabic الله, from Arabic الٱِلٰه, from Arabic إله, from Proto-Semitic ʔil- — deity, god.

Ancestry of “Ромуллоҳ”, step by step

Step	Language	Word	Meaning
1	Classical Persian	رَامُ‌ٱللّٰه	—
2	Arabic	رام الله	—
3	South Levantine Arabic	الله	God, Allah
4	Arabic	الله	Allah; God; god
5	Arabic	الٱِلٰه	God
6	Arabic	إله	god, deity
7	Proto-Semitic	ʔil-	deity, god

Every word from Proto-Semitic ʔil- →Every word from Arabic إله →Every word from Arabic الٱِلٰه →