The problem of automatic keyword and phrases extraction from a text occurs in different tasks of information retrieval and text mining. The task is the identification of terms that best describe the subject of a document. Currently there are a lot of research to solve this problem. Basically, algorithms are developed for texts in English. The possibility of applying these algorithms to the Russian texts are not sufficiently investigated. One of the most known algorithms for solving the problem of keyword extraction is RAKE. This article examines the effectiveness of RAKE algorithm for texts in Russian. The work also applies the hybrid method, which uses the Γ-index metric for phrases weighting, which were obtained using the algorithm RAKE. The article shows that this algorithm is more accurate than PAKE while reducing the number of selected phrases.