Although there are published resources for sample Prayers of the Faithful, they are “composed freely.” The GIRM and the General Introduction to the Lectionary give the following information relevant to your query:
GIRM:
69. In the Prayer of the Faithful, the people respond in a certain way to the word of God which they have welcomed in faith and, exercising the office of their baptismal priesthood, offer prayers to God for the salvation of all. It is fitting that such a prayer be included, as a rule, in Masses celebrated with a congregation, so that petitions will be offered for the holy Church, for civil authorities, for those weighed down by various needs, for all men and women, and for the salvation of the whole world.
- As a rule, the series of intentions is to be
For the needs of the Church;
For public authorities and the salvation of the whole world;
For those burdened by any kind of difficulty;
For the local community.
Nevertheless, in a particular celebration, such as Confirmation, Marriage, or a Funeral, the series of intentions may reflect more closely the particular occasion.
- It is for the priest celebrant to direct this prayer from the chair. He himself begins it with a brief introduction, by which he invites the faithful to pray, and likewise he concludes it with a prayer. The intentions announced should be sober, be composed freely but prudently, and be succinct, and they should express the prayer of the entire community.
GIL:
- In the light of God’s word and in a sense in response to it, the congregation of the faithful prays in the universal prayer as a rule for the needs of the universal Church and the local community, for the salvation of the world and those oppressed by any burden, and for special categories of people.
The celebrant introduces the prayer; a deacon, another minister, or some of the faithful may propose intentions that are short and phrased with a measure of freedom. In these petitions “the people, exercising its priestly function, makes intercession for all men and women,” with the result that, as the liturgy of the word has its full effects in the faithful, they are better prepared to proceed to the liturgy of the Eucharist.