Challenge: Black's Defensive Secret: 'Red Rook Pierces, Black Horse Swims Upstream' - Can you solve it?

When the Red Rook is on File 8 and File 2, both piercing into the Black Pawn on File 5 Rank 4, the Black Horse on File 5 Rank 6 is a cunning knight. The method to neutralize the Red Rook's deadly attack and seize a stunning counterattack opportunity.