Macros

[Phobos]

I like to use

/targetnpc <stenmity>
/ac Cover <t>

This will Cover the highest enmity member of your group.

http://lodestone.finalfantasyxiv.com...e/macro01.html:

<stenmity> Displays available engaged enemy subtargets.

Besides, if you're doing it right and it works the way you suggest that would use cover on yourself.