United Kingdom, June 15 -- Ciara and Russell Wilson credit "a lot of prayer" for their long-lasting marriage.

The couple - who have Sienna, nine, Win, five, and two-year-old Amora together - celebrate 10 years of marriage this summer, and faith and communication are at the heart of their relationship.

Asked the secret of their relationship, Russell told E! News: "God is a lot of that. A lot of Jesus, a lot of prayer, a lot of quality time, date nights."

Ciara, 40, added: "Communication rules the nation. [We are] getting better at mastering [those skills every day]."

The Level Up singer - who also has 12-year-old son Future with former fiance Future - believes the "sexiest thing" about Russell is seeing the former NFL star with his kid...