@LordHaseo
I got the whole tutaminus thing from Jensari 1 on Youtube. Nevertheless, Vader could just absorb it using his lightsaber or could continuously disrupt Sidous’s concentration by using telekinesis thusly preventing him from using force lightning.
But can’t Vader use ↑↑↓↓←→←→BA to block Sidious’s Kamehameha‽