disciple, a Hinn Crusade lasts for a good 45 minutes before he assumes the stage. The entire prelude is setting the crowd up for the show. Then he spends 15 or 20 minutes talking, directly planting those triggers. "The fire...will...fall."
I personally heard him say that the Lord Jesus Christ was going to walk through the coliseum. I never saw Him, and I had a good vantage point.

You ask why a Christian is not protected from it; I was very much protected from it. Those who not only give in to it, but throw themselves at his feet, are literally asking for trouble.
To answer your other question about prayer, the Bible says not to be hasty in the laying on of hands. It doesn't mean "don't pray for another," but it basically means not to whimsically invoke the supernatural, or to pray for such a thing lightly. Now, I have been prayed for by preachers and they tried to make me go down, but their hypnotic triggers did not work on me because I was focused ON GOD, not on them. If you focus on their voice and the commands from it, then you will fall more often than not. If you focus on God, then you are connected to Him and the words of the man/woman are secondary to whatever He wants to do.
Just be still and know He is God.
Blessings,
SpyHunter