I would suggest a number of things, but if your husband isn't willing to try then I would not attempt them, as they would most likely push him farther away. My advice is still to turn to God in prayer. Make a point of going to church extra, perhaps for bible study. Ask him if he wants to come. If not, that is okay, but still go anyway. Let God shine forth from your soul.
In the end, it can only make you stronger and will help you deal with your present situation. But know that God works on his own time, and that sometimes it feels like he isn't listening. That is our cross that we must bear. Take it up and follow him.
As hard as that is, it does bring comfort for those who know how to utilize suffering and make it bear fruit. ;)