I shake too. Sometimes nothing helps but the things that do help are:

I often find I'm 'holding on' and really tense, if I let me muscles relax it passes more quickly
I try to breathe deeply
I usually then start to dissociate, so I do grounding exercises as well, and things like deliberately tensing and releasing muscles, drinking water, observing the room, etc.

Also, general stress-reducing things, like eating well,, exercise and getting enough sleep lower the number of attacks for me.

After the attack I usually try to figure out what happened and talk myself through it - often in really simple terms (when so and so said this, it reminded you of x and that made you sad). Often I won't have realised the connection and it is an opportunity to get in touch with my feelings again (which I've been disconnected from).

Hope some of this helps.