Abby reminding Olivia of what kind of person she is - the kind who took a tire iron to Abby's abusive husband, sued the pants off him, got her a clean divorce, and gave her a job - and the call back to it at the end of the episode when Abby votes to help Amanda.
Olivia Pope is a gladiator. I would follow you off of a cliff if you asked.
In the season one finale, the whole team goes to bat for Quinn. Bitching the whole way, of course, but breaking federal and personal rules to rescue her.
In 2.02, Mellie Grant's heart-to-heart with the widow of a beloved religious leader who had been cheating on her. She clears the room, listens to the woman's confession that her upright husband had a mistress, and reveals that she knows exactly what the widow is going through.
In 2.03, "Hunting Season," Olivia and Huck's conversation at the end.
No more walking alone to your car.
Abby: You love me.
David: I love you.
In the season 2 finale, when it looks like David Rosen is going to turn the Defiance data in to Billy Chambers, one of the worst monsters on the show. Turns out the whole thing was a Batman-Gambit to engineer a taped confession out of him, and he gets appointed to a prestigious attorney position for his troubles.
Also in the season 2 finale, Olivia realises that leaving her employees to their own devices (and the demands her issues have placed on them) has turned them into Well Intentioned Extremists. The speech she gives Grant telling him why she can't leave them also qualifies for this trope.