New conditions for dearomatizingsamarium‐ketyl (hetero)arene cyclizations are reported. In many examples of these samariumdiiodide‐mediated reactions, lithium bromide and water can be used as additives instead of the carcinogenic and mutagenic hexamethylphosphoramide (HMPA). The best results were obtained for the cyclizations of N‐acylatedindolederivatives delivering the expected indolines in good