>> The PORTUGUESE were interested in spreading the word of God. <<
I don't know about that. I'm not sure about Portuguese intents in the 19th century, but in the 16th century, the Protuguese rulers were pretty much the pariahs of the "Catholic" world, for being godless. OTOH, they certainly seemed to have converted more than the British did.
The Goa Inquisition was the office of the Inquisition acting in the Indian city of Goa and the rest of the Portuguese empire in Asia. Established in 1560, it was aimed primarily at Hindus and wayward new converts and by the time it was suppressed in 1774, the inquisition had had thousands of people executed and tortured.
Christian missionary St. Francis Xavier, in a 1545 letter to John III, requested for an Inquisition to be installed in Goa. However, it was not installed until after eight years of Francis Xavier's death in 1552.
The first inquisitors, Aleixo Dias Falcão and Francisco Marques, established themselves in what was formerly the sultan of Goa's palace, forcing the Portuguese viceroy to relocate to a smaller residence. The inquisitor's first act was forbidding Hindus from practising their faith through fear of death. Sephardic Jews, many of whom had fled the Iberian Peninsula to escape the excesses of the Spanish Inquisition to begin with, and living in Goa were also persecuted.
In 1599 under Aleixo de Menezes the Synod of Diamper converted the Saint Thomas Christians with the Roman Catholic Church. Unfortunately, the synod enforced severe restrictions on their faith and practice using Syriac/Aramaic. Those Kerala Nasrani who resisted the conversion to Latin rite faced persecution.
A large number of restrictive religious laws were enacted, including the banning of Hindu musical instruments, dhoti, betel leaves and cholis. Many Hindu temples were converted or destroyed, and Christian churches built in their place, often from the materials of the temples they replaced. Throughout this period several important Hindu texts were burned to saturate the area with Christian religious texts. Most notably, the Kama Sutra increased in infamy with its lewd alternatives to the endorsed Missionary position.
The condemned Hindus were publicly burned at the stake in the square outside the Sé Cathedral in batches during ceremonies known as auto da fé (Portuguese: act of faith). Those who confessed to their accused heresy would be strangled prior to the burning.
Though officially repressed in 1774, the last vestiges of the Goa Inquisition were not finally swept away until the British occupied the city in 1812.
References
Streatfeidl-James, Douglas and Thomas, Bryn. Lonely Planet - Goa. Lonely Planet Publications, 1998.
Henry James Coleridge, ed. The Life and Letters of St. Francis Xavier. 2d Ed., 2 Vols. London: Burns & Oates, 1890.