If 3 June is not observed as the Day of Thanksgiving for the Institution of Holy Communion (Corpus Christi):
The Martyrs of Uganda, 1885-7 and 1977

http://almanac.oremus.org/2021-06-03

Green

Holy Communion
Tobit 6.10-11, 7.1-15, 8.4-8 or
1 Peter 2.2-5, 9-12
Psalm 128 or
100
Mark 12.28-34

Morning Prayer
Psalms 14, 15, 16
Job 10
Romans 5.12-end

Evening Prayer
Psalm 18*
Joshua 8.30-end
Luke 11.14-28

Additional Weekday Lectionary
Exodus 6.1-13
John 9.24-38

Collect

Almighty and everlasting God,
you have given us your servants grace,
by the confession of a true faith,
to acknowledge the glory of the eternal Trinity
and in the power of the divine majesty to worship the Unity:
keep us steadfast in this faith,
that we may evermore be defended from all adversities;
through Jesus Christ your Son our Lord,
who is alive and reigns with you,
in the unity of the Holy Spirit,
one God, now and for ever.

Post Communion

Almighty and eternal God,
you have revealed yourself as Father, Son and Holy Spirit,
and live and reign in the perfect unity of love:
hold us firm in this faith,
that we may know you in all your ways
and evermore rejoice in your eternal glory,
who are three Persons yet one God,
now and for ever.

Additional Collect

Holy God,
faithful and unchanging:
enlarge our minds with the knowledge of your truth,
and draw us more deeply into the mystery of your love,
that we may truly worship you,
Father, Son and Holy Spirit,
one God, now and for ever.