/assist <p0>
/wait 1
/attack <t>Picks up whatever your party leader is fighting and attacks it. Keeps the whole party on one target without anyone calling it out loud.
Recasts your shadows, cancelling the old ones first so the new set applies cleanly. Ninja tanking is entirely this loop, and it is the most-pressed macro in the game.
/ma "Utsusemi: Ni" <me>
/wait 2
/ma "Utsusemi: Ichi" <me>