Alsalam 'alaykom wa rahmat Allah
brother there is nothing better than Quran to protect u from everything that is evil, even the evil of oneself, read Surat Al-Baqra daily if u cant buy a tape and keep it running in your home, in the morning before u leave read your morning prayers along with Ayat Al-kursy, aya 255 in surat baqara and almo'withat suras no 112,113, and 114
3 times.
I tried to find fatwa for u I found it on islam forum read it below insha'Allah it will be of help, the ones below about evil eyes:
http://forums.gawaher.com/index.php?act=ST&f=53&t=2853&
I found this fatwa about black magic hope it will help
http://www.islamonline.net/askaboutislam/d...questionID=3121
http://forums.gawaher.com/index.php?showtopic=4321&
I hope the answers there will help u and Allah knows best
waslam 'alaykom wa rahmt Allah