Genjutsu mirror is the best counter to a shisui, so either have that on your main if you intend to keep using fire, or full breakthrough kurenai (she's worth it, use arena points if you dont want to use 90 stamina for the elite instances).

Pakura, Hokage Minato

Fire Main, Regular Gaara (with breakthroughs)

4,3,2,2,1 with Flood Dragon

Gaara to get rid of the Shisui barrier, Pakura to give more attacks, fire main as a support

Shisui and masked man teams (usually paired with an Itachi Anbu) is one of the hardest teams to go against without having a ninja with an immobile or chaos and a dodge. The only other suggestion is to have a roshi, han, Sailor Sakura, Water Main.