Is hijrah obligatory for those who feel vulnerable in their religion?

If
the situation is as you describe, and a Muslim feels vulnerable with
regard to himself and his religious commitment in the face of temptations
in his own country, then it is prescribed for him to migrate – if he can
– to a land where he will feel safe.

And
Allaah is the source of strength. May Allaah bless our Prophet Muhammad
and his family and companions, and grant them peace.