What is a “net provider of security,” or a “global security provider”? How are such roles adopted by rising powers? We define a net provider of security as a social role, when an actor provides novel, niche, and functionally differentiated security duties, supporting burden-sharing in providing public goods. The nascent literature on these US-vectored roles characterizes role adoption as largely successful. However, rising powers contest the US-designated net provider of security role. Rising powers have stated or latent foreign policy goals to shape international order in their strategic vision, reflecting ideational capacity to reconceptualize their role in global politics, or a material capacity to reposition their rank. Building upon insights from role theory, we illustrate that rising powers exploit temporal and rhetorical ambiguities and leverage their material and ideational resources to execute role differentiation through three micro-processes of role resistance—role acknowledgment, role task rejection, and role task substitution—used to promote an idiosyncratic role, casting the US-vectored role as non-functional, non-representational, and untenable. We examine crucial cases of rising powers, India and China, to develop our theoretical contribution. Our findings speak to the literatures on the logic of identity management, rhetoric in international politics, the taxonomy of contemporary ad hoc security arrangements, and the epistemological project of globalizing international relations.