How I imagine Leia and Obi-Wan killing Grievous in my fic has gone
Obi-Wan: Careful, Leia. This is General Grievous. He's an excellent saber fighter.
Grievous: laughs Jedi. I will add your lightsabers to my collection. four arms unfold, each igniting a stolen blade
Obi-Wan: He's not. But there's no reason to underestimate him. He's killed many Jedi.
Leia: Force-sensitive, then?
Obi-Wan: Well, no, but still—
Leia: I see. looks at Grievous, then clenches her fist
The sound is horrific—shrieking metal and cracking bone crushed together. Grievous collapses into a twisted lump of flesh and durasteel. Four lightsabers clatter to the ground.
Leia: unclenches her hand
Obi-Wan: W-What? How did you—why didn't—
Leia: Didn't Anakin ever crumple metal when he lost control? When he got angry?
Leia: You really should have thought of this one before.
Obi-Wan: looks at the remains of the most feared Jedi killer in the galaxy
Obi-Wan: I need to sit down.