Atlas's Setback can shut down Terminus's ult entirely. Stay out of his range and fire it as soon as the animation is finished, and he'll be stuck with 1HP once Setback ends. You can also use Second Chance to avoid the explosion if you can't get away.

If Evie uses Wormhole, try to pick up on any trends. Does she always warp back? Does she warp after using Soar? Does she like to warp up in the air? Use this information to predict her movements and take her down.

Not much you can do against Inara. If you're set on killing her, buy Bulldozer 3 and help your teammates tear down her deployables. Shadow Step her ult if she tries to hit you with it. Don't go in alone, because you don't have the power to finish it.

When Io deploys Luna, you can use Broadside to deal big damage or force Io to move her, leaving Luna further from the middle of the field and on a cooldown. With Bulldozer, you can take Luna down with a single rclick, keeping it from the point.