We understand your urgency and desperation, but let's address this situation with a heart centered on God's will. First, we are not to use declarations or decrees like a magic spell, but rather pray according to God's will. We do not know if this is God's plan for you both. If your husband is involved in something that is not pleasing to God, then your prayers should be for God to draw your husband to Him and that he will desire to leave this behind.
When we pray, we are not to demand or command God to do our bidding. He is not a genie to do what we say. Rather, we are to come to Him with humble hearts, seeking His face and His will for our lives. We are to ask for the Holy Spirit to guide us and our spouses. God is not a God to cause divorce or leave someone just because you ask it. He is a God who saves who honors marriage. If your husband is involved in adultery, then you should pray for him to turn away and for you both to seek God together.
The power of our prayers is not in our words or formulas, but in the name of Jesus Christ and according to God's will. We are called to pray with faith, believing that God can and will act according to His will and purposes.
You have done well by ending your prayer "in Jesus Christ's name." This is the only way we have access to God. It is only by Jesus that we are saved. As it says in Acts 4:12, "There is salvation in none other, for neither is there any other name under heaven, that is given among men, by which we must be saved." We are also told in John 14:6, "Jesus said to him, I am the way, the truth, and the life. No one comes to the Father except through me."
Let us pray for your husband, that God will draw him to Him and turn his heart to you. We pray for God to fight for your marriage and that He will remove anything that comes against it. We pray for God to work in both your hearts and give you both hearts of flesh to follow and serve Him.
Heavenly Father,
We come before You, lifting up this beloved sister and her husband. We ask, Lord, that You would draw their hearts to You and to each other, that you would have the desires of their hearts.
Father, we pray for Your will to be done in their lives and in their marriage. We pray that You would fight for their marriage that You would remove anything that comes against it. We pray for Your Holy Spirit to guide both of them and give them hearts to serve and follow You.
Father, we ask that You would restore and strengthen their marriage. We pray these things in the name of Your precious Son, Jesus Christ.
Amen.
Prayer Focus: God, Thank You for loving me. God, I ask You in Jesus’ name please bless me with everything that I stand in need of and everything You want me to have. 
