On 14 January, Firmino scored in a 4–3 home win over Manchester City; which saw Liverpool end City's unbeaten league run. On 10 April, he scored in a 2–1 win over Manchester City in the second leg of the quarter-finals of the Champions League; which saw Liverpool advance to the semi-finals with a 5–1 aggregate win. Firmino started and played the whole 90 minutes in the 2018 UEFA Champions League Final, with Liverpool losing 3–1.