Which prayer in the Roman Missal was greatly influenced by the divine liturgy of St. Basil?

Eucharistic Prayer IV in the Roman Missal shows significant influence from the Divine Liturgy of St. Basil. This connection manifests in its structure and language, reflecting the ancient prayer tradition that emphasizes the mystery of the Eucharist. The prayer contains themes of thanksgiving and acknowledges the role of the Holy Spirit, consistent with Eastern liturgical practices found in St. Basil's Liturgy.

Eucharistic Prayer IV also includes a profound emphasis on the gathering of the Church and the universal nature of salvation, paralleling the themes present in the Eastern traditions. This alignment showcases the ongoing dialogue between Eastern and Western liturgical practices and aids in fostering a sense of unity in the celebration of the Eucharist. The prayer encapsulates the celebrant's deep sense of the Church's mission and the mystery of Christ's presence in the sacrament, reflective of the rich heritage of the Eastern liturgy.