Here is the for the good health of your children. This mantra is chanted for child protection and good health. It should be recited with some water in hands about 108 times.
Child protection mantra:
Om Namah Bhagwate Gurudaya
Vyom Keshaya Svastyasthu Swaha
Child protection mantra:
Om Namah Bhagwate Gurudaya
Vyom Keshaya Svastyasthu Swaha