Student or Learner
Is "God forbid! If XXX (country) is out of the World Cup, then I'll support XXX (another country)" correct?
I find "God forbid!" there unnatural (as a standalone exclamation).
God forbid that Spain are knocked out of the World Cup. If they are, I'll have to support Germany!
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
I do too- supporting teams is deep rooted.