Children, obey your parents in the Lord, for this is right.(Ephesians 6:1 ESV)
I guess this is something most parents will be happy to pray for their kids!
Even Jesus had to learn obedience (Hebrews 5:8-9). As a husband obeys Christ and a wife submits to her husband, so a child is to obey both parents in Christ (see Ephesians 5:22-33).
I cannot force obedience upon my children, but as their father I can walk in obedience to Christ, letting this be seen by my kids and showing them that as I am not a law unto myself so too they should be obedient.
And, of course, I pray that God will put within them a desire and motivation to obey!