A couple thoughts i left out of the first message:

I suggest "take eyes" rather than "lock eyes" because it's a less forceful/invasive phrasing and because it mirrors "take right hands," "take hands four" et cetera. And yes, i've seen others' comments to the effect that some find eye contact uncomfortable, but eyes are the primary connection between dancers in that move, so i see no reason to shy away from including that information in teaching and prompting, and those who find eye contact uncomfortable can continue avoiding it - as they do anyway, regardless of what the move is called.