Mystique: Kurt, people have hated you your whole life. Why do you fight for them?
Nightcrawler: I fight for the ones that don't.
This exchange between Tony Stark and WarMachine in the latter's deploy in SpecOps 7 Mission 1:
War Machine: [returning from a deploy] All set, Tony. I hit the kill switch on that little operation.
Tony Stark: I knew I could count on you. You're so trustworthy you make me feel bad about myself.
War Machine: Oh, good. It's working.
This exchange between Tony and Rescue when the latter took to the field:
Rescue: Glad you're with me, Agent. Let's try to keep collateral damage to a minimum.
Tony Stark: Worry about yourself, Pepper. I can build another tower, I can't build another you.
From Spec Ops 14:
Thor: Agent. Together we will face the Destroyer yet once more. I have come to think of you as my talisman against it. To battle!
From Season 2, chapter 3. If Jean loses the heroic battle Xavier and Magneto give Jean a motivational speech.
In Season 2, Chapter 2, Agent Hill warned Rogue against going into a combat situation without back-up, but Rogue brushed her off thoughtlessly. In Special Ops 16, this reckless tendency gets Rogue captured by the enemy. It's a testament to Maria's professionalism that she does not use the opportunity to say "I told you so," but instead works to rescue her almost as hard as Gambit does.