I grew up evangelical, and the way evangelicals use the cross this argument makes sense. But the catholic crucifix as a depiction of the suffering of Christ makes more sense as a symbol to put a believer’s mind and heart in the right place for supplication.
Especially important is the warning to avoid conversations with the demon. We may ask what is relevant but anything beyond that is dangerous. He is a liar. The demon is a liar. He will lie to confuse us. But he will also mix lies with the truth to attack us. The attack is psychological, Damien, and powerful. So don’t listen to him. Remember that - do not listen.