Dealing with an early N9 E9 Niefel Giant rush

[Epaminondas]

What is the best way to deal with an early N9 E9 Niefel Giant rush? Presume that you don't have access to high-level summons or spells that can insta-kill. I see this as an almost impossible proposition. A max Nature and Earth Bless Niefel GIant will re-generate hit points and fatigue at a high rate, and the cold aura won't let your units do enough damage before they die off. The Hinnom giant sacreds may be the only units that can compete mano-a-mano, but my tests consistently show that they lose in an even-number match-ups (and you can't amass as many anyways, due to the pop eating problems and the high resource requirements). Androphag Archers seem to work okay with low Nature Bless Niefel Giants, but max Nature Bless Giants re-generate too fast. Are you pretty much doomed if you start off next to Niefelheim, and he targets you with a max Nature and Earth Bless Niefel Giants?