Excerpt: "The Sinner's Prayer rose from the mist of evangelical revivalism, and is in many ways a work of genius, as brilliant as the simple formulations of Martin Luther (Sola fide! Sola Scriptura!). It comes in many flavors, but it generally contains two elements: repentance for sin and trust in Christ's redemptive work at the Cross for forgiveness."
Example sinner's prayer:
Lord Jesus, I need You. Thank You for dying on the cross for my sins. I open the door of my life and receive You as my Savior and Lord. Thank You for forgiving my sins and giving me eternal life. Take control of the throne of my life. Make me the kind of person You want me to be.
Read more about the Jesus Prayer at Christianity Today