As you didn't answer the question I will leave it at that
I did not answer the question as you phrase it, because it is not one that can be answered.
The only requirement for salvation is God's good Grace. Everything else, faith, repentence, belief in the deity of Christ, the atoning work of Christ, etc, etc... comes as a result. Just as crucifying the flesh is a result of Salvation, not the cause.
So, how can a I answer a question such as yours, when you ask about beliefs required for salvation?
I don't do the Sinner's Prayer, or any other similar formulation.
Step 1:Bow your head and clasp your hands
Step 2: "Jesus is God, Amen"
Step 3: Magically saved!