As parents who are passionate about the life of their children, you never want to see them go through the pain of ill health, and saying a word of prayer for them is an effort to ensure their safety.
Say this prayer:
Good God, I commit my child/children into your hands. Their health is important to me and I would never want them to become sick or ill. I hereby pray for good health from you Lord. I ask that you grant them strength, let their joy always be full, and let their smiles never get darkened by sickness. Let the light of your salvation bring them to the fullness of your glory, Amen.