I’ve read from a yahoo article these 21 phrases that we could use during a heated argument. 
Fighting is inevitable and normal in any marriage, but what is not, is exchanging hurtful words that both of you will regret soon after. I know it’s never easy to compose yourself when you’re provoked by words or by emotions, that’s why I’m suggesting that we learn to digest these phrases and actually use it. 

Please try to understand my point of view.
Wait, can I take that back?
You don’t have to solve this—it helps me just to talk to you.
This is important to me. Please listen.
I overreacted, I’m sorry.
I see you’re in a tough position.
I can see my part in this.
I hadn’t thought of it that way before.
I could be wrong.
Let’s agree to disagree on that.
This isn’t just your problem, it’s our problem.
I’m feeling unappreciated.
We’re getting off the subject.
You’ve convinced me.
Please keep talking to me.
I realize it’s not your fault.
That came out all wrong.
I see how I contributed to the problem.
What are we really fighting about?
How can I make things better?
I’m sorry.
I love you.

Saying these phrases will help solve a lot of hidden and welled up emotions. Let’s all remember that our partners are not mind readers. Speak up and stop being crabby just because the partner failed to see “signs” or reasons of your crabbiness.