How can I lock a cell that I pull from another sheet?

How can I lock a cell that I pull from another sheet?

In this example will be : {Formula Table Range 9}, {Formula Table Range 11}


=IF($[Week-X]1 = {Formula Table Range 9}, {Formula Table Range 10}, IF($[Week-X]1 = {Formula Table Range 11}, {Formula Table Range 12}, IF($[Week-X]1 = {Formula Table Range 13}, {Formula Table Range 14}, IF($[Week-X]1 = {Formula Table Range 1}, {Formula Table Range 2}, IF($[Week-X]1 = {Formula Table Range,{Formula Table Range 4}, IF($[Week-X]1 = {Formula Table Range 6}, {Formula Table Range 5}))))))

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