What is the minimum necessary (Wajib) verbal action required to exit the state of prayer?

The Necessary Acts of Prayer Part 2: Sittings, Testimony, and Cong.

• Uttering the word "As-Salam".
• Reciting the entire Tasbih thrice.
• Saying "Alhamdulillah".
• Saying "As-Salamu Alaykum wa Rahmatullah".