How can one prevent the effects of voodoo ?

Prayer, pray to God but if you are a non-Christian or non-muslim then I guess you'll find another religion or powerful source of Voodoo I guess

I think most of the natural and mystic powers agree to this one law : keep your hands clean, your heart pure and your thoughts free of evil.
Heck, even the other religions conform to that too.
Do the above and be free from all vodoo, mystic, religious spells.

Vodun worship, which are Ancestors Fon.
Benin is considered the birthplace of this cult, which combines the visible and the invisible.
As a result of some historical inter-tribal wars, some Vodun became part of the pantheon of Orisá Yoruba.
Such is the case of Nana Mburuku and Somponnó .

My respects.