The term "fellow believers" refers to people who share a common belief or faith. It can be used in a religious context, where it describes individuals who belong to the same religion or denomination and adhere to its teachings and principles. In a broader sense, it can also refer to people who subscribe to a particular ideology, cause, or movement, and work together towards achieving common goals. Essentially, "fellow believers" are individuals who share a deep conviction in something, and come together to support each other and promote their shared beliefs.