These
  mantras have unique frequencies; some of the mantras are Shaabri  
Navnath mantras. The other mantras are traditional Hindu mantras. The  
unique frequencies of these mantras are useful in negating the harmful  
frequencies coming your way.
I 
must point out that the  mantras are beneficial in defeating evil 
energies and frequencies, but  should not be used for harmful purposes.
Most Powerful Protection Mantra
The 
  Maha-mrityunjaya mantra is one of the most important and widely 
recited  of the Hindu Mantras.There are a couple of variations of this 
mantra  like the Mritasanjeevani - Health Mantra.This is one such 
variation with  the addition of the first two lines
This
 is an extremely powerful  Protection Mantra which protects one from 
sudden death, snake bite and  destroys malignant  deceases.This is a 
mantra which give ‘Moksha ‘ or  liberation. Recitation of this mantra is
 said to give unbelievable  results and the divine nectar of life is 
said to flow through your body.
Mantra
Om hraum jum sah l
Om Bhur Bhuvah Swaha l
Om Trayambakam Yajamahe
Sugandhim Pushtivardhanam l
Urva Rukamiva Bandhanaan
Mrityor Mokshiye Maamritat ll
Mantras to remove Evil Eye
These
  are Shaabri mantras which are used to remove and destroy Drusth or the
  Evil Eye. These mantras are in the old Marathi script and said to be  
very effective. I have tried to translate as best as I could.
This
  mantra has to recited 7 times and Vibhuti or sacred ash from a holy  
place should be applied on your forehead, doing this will remove and  
destroy the Evil Eye. This mantra is dedicated to Ghorakhnath, second of
  the nine masters and saints the Navanath’s,a great saint who is  
considered to be a reincarnation of Shiva.
Mantra
"Om
  namo guru adesh thujha nave bhut pale prĂȘt pale khavis pale sab pale n
  pale guru ki Gorakhnath ki beed mahichale guru ki sangat meri bhagat  
chale mantra ishwari vacha ll"
This mantra has to be recited taking either salt of ash in your hand, this salt or ash should be moved over the body in a circular manner and the thrown away. Doing so will remove and destroy the Evil Eye.
Mantra
"Nadichaya palikede mangin ubhi,haati mithachi vati,drusth payavar utar ekaya ghosthi l"l
Protection Mantra for Children
This
  is a unique mantra for the protection and welfare of ones child.  
Everyone is sometimes or the other fearful for the safety and welfare of
  ones child.
To
 use this mantra you have to hold a little bit of  water [in a small 
cup] in your hands, the mantra has to be recited 101  times while 
holding the water in your hand, this will abhimintrit [bind]  the water 
with this mantra. Then this water has to be applied as a  Tilak on the 
forehead of your child.
It
 is said that doing this  gives your child Protection  from all types of
 harm. Kindly note these  mantras are been given for information 
purposes only, I am not  advocating their use.
Child protection mantra
"Om namo bhagwate garudaya l
Vyom  keshaya svastyasthu swaha ll"
 
