Religion in Grabbistan

The Grabbistinian people mostly consider as atheist.
This is mostly due to the reason that religions from other countries around the world never arrived in Grabbistan, the first confrontation between Grabbistinians and an outlandish religion occurred in 1979, the same year when Grabbistan got over it's "Complete-Isolation-Policies" that were the foundation of Grabbistinian policies for more than 700 years. Said confrontation went rather neutral, Grabbistinian people never seemed to show much interest in religion at all.
The only indigenous religion was sadly lost over time, after settlers hunted and murdered more than 95% of the Grabbistinian indigenous population. Not even the religion's name was preserved until today.