I've heard stilletos can hurt.your best defense is God, Jesus & the Holy Spirit & the angels he has assigned to you. but that doesn't mean you shouldn't have any physical defense weapons. if able, learn how to use a gun. bats & pipes are easy to get. also, secondarily, if you know the "right people", that can assist. blessings to you.
Us women were taught safety skills when alone with a man who might suddenly turn on you.
Locking the car doors, mace, having keys at ready to poke, umbrella (everyone saw what Britney Spears did to the pesky pap's car) having a dog... mobile phone to call a friend...never say directly where you're going to a stranger. Wearing jeans or leggings that are hard to remove.
As for Christians those Bibles are pretty heavy. And we can resist the devil with our words.