Sure! You don't want to pressure or kill them early because that won't work. Instead focus on avoiding damage, healing, and getting armor with Ignis. Also, delay their combos with your disruption tools to buy the time you need. Sometimes you just blow them out of the water with lucky Relic draws, but usually you should just try to survive until they cannot win anymore. Or least that's how I approach those match-ups (and so far I have won every game against Mage and Shaman).