There's not a whole lot magic can do to help Matrix activities. I can't think of anything that'd be more useful than just going up to the augmented limit for Logic, Intuition, and/or Willpower.
Since the OP is asking about a 4-5 minute context, I anticipate he's thinking about nominations for alchemical preparations. If I were to rely on those, instead of having a mage on the team, I'd be interested in a mana barrier alchemical prep. You can always roll stealth instead of being invisible, you can always climb instead of levitating... but you can't just go "wireless off" vs the Astral Plane if you don't have a mage to astrally defend you. A Mana Barrier alchemical preparation, and if playing 5e some DMSO+Blight rounds and now you have a real chance against spirits even if the team lacks a mage.