Richard Dawkins, emphasizing maximum scientism, argues for the conflict between science and religion. By proposing the improbable argument, he has viewed the existence of God as being of the least possiblity, and finally, inferred atheistic belief. In contrast, Alister McGrath dismissed Dawkins's maximum view of scientism as incorrect and, using critical realism and the psychology of perception, challenged his atheistic view. The point of leading research is to evaluate and measure this encounter. In this study, we have used analytical and library-based method and technique. The research shows that although the analysis of McGrath from a theistic point of view of the universe as an interpretive framework solves Dawkins' alleged conflict between science and religion, it still cannot be away from epistemological relativism. At the same time, some of his critiques on the proof of improbability are not without weakness.