Appointed Readings
The Lutheran / northeast-German order assigns John to Tuesday (LSB has Mark here).
Introit & Collect Historic Western
The historic Western rite’s propers for this weekday Mass — not found in Lutheran service books; given for reference alongside the readings.
Introit
But it behoves us to glory in the cross of our Lord Jesus Christ: in whom is our salvation, life, and resurrection; by whom we are saved and delivered. Psalm. May God have mercy on us, and bless us: may he cause the light of his countenance to shine upon us, and may he have mercy on us.
Collect of the Day
O Almighty and everlasting God, grant us so to celebrate the mysteries of our Lord's passion, that we may deserve to obtain pardon. Through the same Lord, &c.
Introit and Collect from Husenbeth’s Missal for the Use of the Laity (London, 1853), public domain; cross-verified against the Philadelphia Roman Missal … for the Use of the Laity (1861).
Source: The Lutheran Missal, "Lenten Lections" (11 February 2020), https://lutheranmissal.home.blog/2020/02/11/lenten-lections/ — the historic Western (Roman-rite) Lenten ferial lectionary in its late-medieval German / Lutheran recension. Introits and collects: F. C. Husenbeth, The Missal for the Use of the Laity (London, 1853), public domain; cross-verified against The Roman Missal … for the Use of the Laity (Philadelphia, 1861) and The Anglican Missal (1921).