Rad ukazuje na pronađene fragmente iz samostana benediktinki Sv. Roka u Rijeci čije se arhivsko gradivo danas nalazi u samostanu Sv. Danijela u Abano Terme u Italiji, gdje su riječke redovnice izbjegle nakon Drugog svjetskog rata. Od tri pronađena, članak opisuje jedan glagoljski fragment na uglatoj glagoljici kojemu pristupa kroz paleografsku, kodikološku, teološko i liturgijsko-povijesnu analizu. Donosi se transliteracija teksta i zaključuje se da je fragment pripadao brevijaru iz razdoblja kraja 14. ili 15. stoljeća te da je vezan uz liturgijsko svetkovanje sv. Martina biskupa i ispovjednika. Pronalazak fragmenta smješta se u dosadašnje spoznaje o liturgijsko-jezičnoj povijesti Rijeke i iznose se hipoteze o načinu na koji je dospio u samostan riječkih benediktinki, zajednicu koju se smatra latinaškom. In the thus far unexplored archives of the monastery of the Benedictine nuns of St. Rochus in Rijeka, which have been located at the Monastery of St. Daniel in Abano Terme, Italy, since the exodus of Italians from lands annexed by Croatia in the aftermath of World War II, a corpus of three previously unknown fragments consisting of two fragments written in the Glagolitic script in Old Church Slavonic and one in the Latin script in Latin was discovered. These fragments were found in a book related to the management of Franjo Knežić’s endowment for the construction of the monastery. This paper analyses one of the Glagolitic fragments. The fragment, which is written in angular Glagolitic script, is analysed from the palaeographic, codicological, theological, and liturgical-historical perspective. The transliteration of the text is provided, and it is concluded that the fragment came from a breviary from the end of the 14th or from the 15th century, and that it was related to the liturgical celebration of St. Martin, Bishop and Confessor. The discovery of the fragment is placed within the context of the liturgical-linguistic history of Rijeka, and hypotheses on the way in which it came to be in the possession of the Benedictine nuns from Rijeka, who were considered a Latin monastic community, are formed.