To evaluate the anti–apoptotic and radical scavenging activities of dietary phenolics, namely ascorbic acid, α -tocopherol acetate, citric acid, salicylic acid, and estimate H 2 O 2 -induced apoptosis in renal cell carcinoma cells. The intracellular antioxidant potency of antioxidants was investigated. H 2 O 2 -induced apoptosis in RCC-26 was assayed with the following parameters: cell viability (% apoptosis), nucleosomal damage and DNA fragmentation, bcl-2 levels and flow cytometery analysis (ROS production evaluation). The anticancer properties of antioxidants such as ascorbic acid, α – tocopherol acetate, citric acid, salicylic acid with perdurable responses were investigated. It was observed that these antioxidants had protective effect (anti–apoptotic activity) against hydrogen peroxide (H 2 O 2 ) in renal cell carcinoma (RCC-26) cell line. This study reveals and proves the anticancer properties. However, in cancer cell lines anti–apoptotic activity can indirectly reflect the cancer promoter activity through radicals scavenging, and significantly protect nucleus and bcl-2.