Ten affirmations for anger — for the moment before you say the thing, when the heat is real and the reaction is still yours to choose.

Anger gets a bad reputation it has not entirely earned. It is a signal, usually an accurate one, that a line has been crossed. The problem is never the feeling. It is the eleven seconds after the feeling, where the damage gets done.
These ten affirmations are for those eleven seconds. Notice that almost none of them tell you not to be angry. They separate feeling it from acting on it, which is the only part that was ever actually up to you.
Say the line and move your body — stand up, walk to another room, put the phone face down. Anger is physically activating, and the surest way to keep it out of your mouth is to give it somewhere else to go for two minutes.
Come back to the thing afterwards rather than dropping it. Anger that gets suppressed tends to return as resentment, which is much harder to resolve. The point of the pause is a better conversation, not no conversation.

1. “I acknowledge my anger without acting on it.”

2. “I refuse to let anger choose my reactions.”

3. “I channel my anger into problem-solving thoughts and actions.”

4. “I remain calm and centered even in moments of anger.”

5. “Controlling my anger makes me feel resilient and strong.”

6. “I accept my emotions without being controlled by them.”

7. “I allow myself to feel my emotions without wallowing in them.”

8. “I take a deep breath and focus on controlling my emotions.”

9. “I clear my head and let my anger fade away.”

10. “I allow myself to feel all my emotions without judgment.”
"I acknowledge my anger without acting on it." It does not ask you to stop being angry, which is why it is usable in the moment — telling yourself to calm down while furious mostly produces more fury.
Suppressing it and pausing on it are different things. A pause defers the response; suppression pretends the line was never crossed, and that tends to come back as resentment or as a much larger outburst later.
Change your physical state first — stand, walk, breathe out longer than you breathe in — then say the affirmation. Anger is a body event before it is a thought, so the body is where you get traction.
Usually not the first version. Wait until you can say the same thing without volume; if it is still worth saying an hour later, it is worth saying properly.