In the contemporary security ecosystem, the paradigm of conflict has shifted from hard military confrontation to "Cognitive Warfare" and "Cultural Invasion," where conquering the cognitive apparatus and transforming national-religious identity replaces territorial conquest. This research aims to explicate the Islamic defense doctrine by analyzing Quranic strategies to counter soft infiltration and immunize society against information disorders. Adopting a descriptive-analytical approach and utilizing the theoretical frameworks of "Soft Power" and "Passive Defense," this study aligns revealed teachings with modern theories of communication science and political psychology. The findings indicate that the Holy Quran offers a "systematic and multi-layered" defense system based on eight fundamental pillars: 1) Enhancing "Insight (Basira) and Critical Thinking" to distinguish truth from falsehood; 2) Reconstructing "Cultural Identity" based on mutual recognition; 3) Strengthening the "Family Institution" as a center of tranquility; 4) "Producing High-Quality Content" based on knowledge; 5) Developing vibrant "Cultural Programs"; 6) Utilizing "Media Power" for social monitoring; 7) "Analytical Vigilance" against imported content; and 8) Establishing "International Coalitions" based on piety. The conclusion suggests that implementing these strategies transitions society from passivity to "Smart Resistance," guaranteeing cognitive resilience and cultural independence in the era of globalization.