From the stands, sableye facepalms at xatu's bringing a knife to a gun fight with that ominous wind, and thus giving Team Audino a chance to wreak even worse havoc.
Then, if possible, illumise quickly darts straight to audino right before xatu whips up his wind so that she'll be in a safe spot for the wave of waves, then attacks audino with a thwack from her handbag.
If this won't work for whatever reason and lickilicky is underground and baton passing with him will protect illumise from the winds, waves and whatnot, illumise does that instead.
If either or both of those is not true, illumise instead uses her baton passing skills to switch places with the tearful blaziken after it's moved itself behind leavanny's sludge wave so she'll be safe. Then illumise gives a battle cry.
And if illumise would be endangered from xatu's ally switch before having a chance to do any of this, illumise forgoes all the above and just quickly attacks audino with a swift kick to the jaw before collapsing with a headache from the noise. If that would be a past command and baton passing back with xatu to switch places back wouldn't be, illumise does that to prolong the dreadful agony.