The fire of GOD fell down when Elijah demanded for it to consume the sacrifice he prepared on mount carmel see 1kings 18:17-40.
When you demand by faith that GOD should intervene in any situation, He will do it if you stand your ground in faith. This is the reason the bible says "they that know their GOD shall be strong and do exploit.
You have to know that GOD heard you anytime you called in the time past. He will hear you again whenever you call.
When you know this and you strongly believe it, you have occupied a position that no devil can access. I just hope you see this, be blessed and remain blessed.