In this study, we develop a biocompatible technology to protect bacteriophages from the adverse effects of UV exposure. We tested the potential UV-protective properties of several frequently used food dyes, namely tartrazine, quinoline yellow, sunset yellow FCF, Allura red, Ponceau 4R, azorubine, brilliant blue FCF, and indigo carmine. Our results distinguish brilliant blue FCF (BB) as a selective stabilizer that protects bacteriophages from the adverse effects of UV irradiation while remaining neutral to Gram-negative bacteria. BB is harmless to mammalian cells. Due to these beneficial features, BB-stabilized bacteriophages present significantly higher efficacy in UV-related industrial-like protocols and environmental applications when phages are exposed to sunlight or UV light. We demonstrate model membrane sterilization by dual action and food sterilization by dual action of phages and UV light.