The "Achy Breaky Heart" hitmaker filed for divorce in Tennessee on Tuesday, citing irreconcilable differences and he's determined not to be cut out of his kids' lives.
In court papers, Cyrus has asked to "share the care, custody and control" of Miley, 17, Braison, 16, and Noah, 10.
The couple also has three adult children from previous relationships.
Cyrus took to his Twitter.com account shortly after filing the papers and quoted bible scripture. He wrote, "Can I ask for your prayers this morning for my children... our troops... the hungry... the sick... the homeless. AMEN."