Here are a few options for a formal title, depending on the specific focus of your work:
Option 1 (Most direct and professional):
Strengthening Societal Resilience to Disinformation: The RESIST Methodology
Option 2 (Academic and authoritative):
Implementing the RESIST Methodology to Bolster Societal Resilience Against Disinformation
Option 3 (Strategic and policy-oriented):
A Strategic Framework for Enhancing Societal Resilience to Disinformation: The RESIST Approach
Recommendation: Option 1 is the most standard and effective title for reports, academic papers, or formal presentations.