A wild Shiny pokemon appears and it's going to use recoil damaging moves

[Mr Khan]

Galaki said:

i would probably start off with a Quick ball.

If failed, start paralyze/sleep followed by a DoT move (if available) and keep throwing ultra balls at it while it kills itself with recoil damage.

Quick Ball seems wisest, but Shinies are just one of those things that you can't control. If you get it, great, if not, oh well.